forked from ExternalVendorCode/Signal-Server
4520 lines
102 KiB
C++
4520 lines
102 KiB
C++
/****************************************************************************\
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* Signal Server 1.3.8: Server optimised SPLAT! by Alex Farrant *
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******************************************************************************
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* SPLAT! Project started in 1997 by John A. Magliacane, KD2BD *
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* *
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******************************************************************************
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* Please consult the SPLAT! documentation for a complete list of *
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* individuals who have contributed to this project. *
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******************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify it *
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* under the terms of the GNU General Public License as published by the *
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* Free Software Foundation; either version 2 of the License or any later *
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* version. *
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* *
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* This program is distributed in the hope that it will useful, but WITHOUT *
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or *
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License *
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* for more details. *
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* *
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******************************************************************************
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* g++ -Wall -O3 -s -lm -fomit-frame-pointer itm.cpp hata.cpp cost.cpp fspl.cpp main.cpp -o ss *
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\****************************************************************************/
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#include <stdio.h>
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#include <math.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#include <unistd.h>
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#define GAMMA 2.5
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#define MAXPAGES 64
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#define ARRAYSIZE 76810
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#define IPPD 1200
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#ifndef PI
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#define PI 3.141592653589793
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#endif
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#ifndef TWOPI
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#define TWOPI 6.283185307179586
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#endif
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#ifndef HALFPI
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#define HALFPI 1.570796326794896
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#endif
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#define DEG2RAD 1.74532925199e-02
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#define EARTHRADIUS 20902230.97
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#define METERS_PER_MILE 1609.344
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#define METERS_PER_FOOT 0.3048
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#define KM_PER_MILE 1.609344
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#define FOUR_THIRDS 1.3333333333333
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char string[255], sdf_path[255], udt_file[255], opened=0, gpsav=0, ss_name[16],
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ss_version[6], dashes[80];
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double earthradius, max_range=0.0, forced_erp, dpp, ppd,
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fzone_clearance=0.6, forced_freq, clutter, lat,lon,txh,tercon,terdic,
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north,east,south,west;
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int min_north=90, max_north=-90, min_west=360, max_west=-1, ippd, mpi,
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max_elevation=-32768, min_elevation=32768, bzerror, contour_threshold,
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pred,pblue,pgreen,ter,multiplier=256,debug=0,loops=64,jgets=0, MAXRAD;
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unsigned char got_elevation_pattern, got_azimuth_pattern, metric=0, dbm=0;
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struct site { double lat;
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double lon;
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float alt;
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char name[50];
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char filename[255];
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} site;
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struct path { double lat[ARRAYSIZE];
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double lon[ARRAYSIZE];
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double elevation[ARRAYSIZE];
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double distance[ARRAYSIZE];
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int length;
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} path;
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struct dem { int min_north;
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int max_north;
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int min_west;
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int max_west;
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int max_el;
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int min_el;
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short data[IPPD][IPPD];
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unsigned char mask[IPPD][IPPD];
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unsigned char signal[IPPD][IPPD];
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} dem[MAXPAGES];
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struct LR { double eps_dielect;
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double sgm_conductivity;
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double eno_ns_surfref;
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double frq_mhz;
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double conf;
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double rel;
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double erp;
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int radio_climate;
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int pol;
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float antenna_pattern[361][1001];
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} LR;
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struct region { unsigned char color[128][3];
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int level[128];
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int levels;
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} region;
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double elev[ARRAYSIZE+10];
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void point_to_point(double elev[], double tht_m, double rht_m,
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double eps_dielect, double sgm_conductivity, double eno_ns_surfref,
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double frq_mhz, int radio_climate, int pol, double conf,
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double rel, double &dbloss, char *strmode, int &errnum);
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double HataLinkdB(float f,float h_B, float h_M, float d, int mode);
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double CostHataLinkdB(float f,float h_B, float h_M, float d);
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double FsplLinkdB(float f, float d);
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double ked(double freq, double elev[], double rxh, double dkm);
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double arccos(double x, double y)
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{
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/* This function implements the arc cosine function,
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returning a value between 0 and TWOPI. */
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double result=0.0;
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if (y>0.0)
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result=acos(x/y);
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if (y<0.0)
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result=PI+acos(x/y);
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return result;
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}
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int ReduceAngle(double angle)
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{
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/* This function normalizes the argument to
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an integer angle between 0 and 180 degrees */
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double temp;
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temp=acos(cos(angle*DEG2RAD));
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return (int)rint(temp/DEG2RAD);
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}
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double LonDiff(double lon1, double lon2)
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{
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/* This function returns the short path longitudinal
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difference between longitude1 and longitude2
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as an angle between -180.0 and +180.0 degrees.
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If lon1 is west of lon2, the result is positive.
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If lon1 is east of lon2, the result is negative. */
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double diff;
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diff=lon1-lon2;
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if (diff<=-180.0)
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diff+=360.0;
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if (diff>=180.0)
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diff-=360.0;
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return diff;
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}
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char *dec2dms(double decimal)
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{
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/* Converts decimal degrees to degrees, minutes, seconds,
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(DMS) and returns the result as a character string. */
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char sign;
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int degrees, minutes, seconds;
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double a, b, c, d;
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if (decimal<0.0)
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{
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decimal=-decimal;
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sign=-1;
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}
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else
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sign=1;
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a=floor(decimal);
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b=60.0*(decimal-a);
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c=floor(b);
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d=60.0*(b-c);
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degrees=(int)a;
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minutes=(int)c;
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seconds=(int)d;
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if (seconds<0)
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seconds=0;
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if (seconds>59)
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seconds=59;
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string[0]=0;
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snprintf(string,250,"%d%c %d\' %d\"", degrees*sign, 176, minutes, seconds);
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return (string);
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}
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int PutMask(double lat, double lon, int value)
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{
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/* Lines, text, markings, and coverage areas are stored in a
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mask that is combined with topology data when topographic
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maps are generated by ss. This function sets and resets
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bits in the mask based on the latitude and longitude of the
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area pointed to. */
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int x, y, indx;
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char found;
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for (indx=0, found=0; indx<MAXPAGES && found==0;)
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{
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x=(int)rint(ppd*(lat-dem[indx].min_north));
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y=mpi-(int)rint(ppd*(LonDiff(dem[indx].max_west,lon)));
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if (x>=0 && x<=mpi && y>=0 && y<=mpi)
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found=1;
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else
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indx++;
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}
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if (found)
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{
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dem[indx].mask[x][y]=value;
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return ((int)dem[indx].mask[x][y]);
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}
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else
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return -1;
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}
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int OrMask(double lat, double lon, int value)
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{
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/* Lines, text, markings, and coverage areas are stored in a
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mask that is combined with topology data when topographic
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maps are generated by ss. This function sets bits in
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the mask based on the latitude and longitude of the area
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pointed to. */
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int x, y, indx;
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char found;
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for (indx=0, found=0; indx<MAXPAGES && found==0;)
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{
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x=(int)rint(ppd*(lat-dem[indx].min_north));
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y=mpi-(int)rint(ppd*(LonDiff(dem[indx].max_west,lon)));
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if (x>=0 && x<=mpi && y>=0 && y<=mpi)
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found=1;
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else
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indx++;
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}
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if (found)
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{
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dem[indx].mask[x][y]|=value;
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return ((int)dem[indx].mask[x][y]);
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}
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else
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return -1;
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}
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int GetMask(double lat, double lon)
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{
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/* This function returns the mask bits based on the latitude
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and longitude given. */
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return (OrMask(lat,lon,0));
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}
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int PutSignal(double lat, double lon, unsigned char signal)
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{
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/* This function writes a signal level (0-255)
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at the specified location for later recall. */
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int x, y, indx;
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char found;
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for (indx=0, found=0; indx<MAXPAGES && found==0;)
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{
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x=(int)rint(ppd*(lat-dem[indx].min_north));
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y=mpi-(int)rint(ppd*(LonDiff(dem[indx].max_west,lon)));
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if (x>=0 && x<=mpi && y>=0 && y<=mpi)
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found=1;
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else
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indx++;
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}
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if (found)
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{
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dem[indx].signal[x][y]=signal;
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return (dem[indx].signal[x][y]);
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}
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else
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return 0;
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}
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unsigned char GetSignal(double lat, double lon)
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{
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/* This function reads the signal level (0-255) at the
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specified location that was previously written by the
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complimentary PutSignal() function. */
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int x, y, indx;
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char found;
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for (indx=0, found=0; indx<MAXPAGES && found==0;)
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{
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x=(int)rint(ppd*(lat-dem[indx].min_north));
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y=mpi-(int)rint(ppd*(LonDiff(dem[indx].max_west,lon)));
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if (x>=0 && x<=mpi && y>=0 && y<=mpi)
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found=1;
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else
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indx++;
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}
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if (found)
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return (dem[indx].signal[x][y]);
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else
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return 0;
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}
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double GetElevation(struct site location)
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{
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/* This function returns the elevation (in feet) of any location
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represented by the digital elevation model data in memory.
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Function returns -5000.0 for locations not found in memory. */
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char found;
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int x, y, indx;
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double elevation;
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for (indx=0, found=0; indx<MAXPAGES && found==0;)
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{
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x=(int)rint(ppd*(location.lat-dem[indx].min_north));
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y=mpi-(int)rint(ppd*(LonDiff(dem[indx].max_west,location.lon)));
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if (x>=0 && x<=mpi && y>=0 && y<=mpi)
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found=1;
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else
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indx++;
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}
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if (found)
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elevation=3.28084*dem[indx].data[x][y];
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else
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elevation=-5000.0;
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return elevation;
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}
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int AddElevation(double lat, double lon, double height)
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{
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/* This function adds a user-defined terrain feature
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(in meters AGL) to the digital elevation model data
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in memory. Does nothing and returns 0 for locations
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not found in memory. */
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char found;
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int x, y, indx;
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for (indx=0, found=0; indx<MAXPAGES && found==0;)
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{
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x=(int)rint(ppd*(lat-dem[indx].min_north));
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y=mpi-(int)rint(ppd*(LonDiff(dem[indx].max_west,lon)));
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if (x>=0 && x<=mpi && y>=0 && y<=mpi)
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found=1;
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else
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indx++;
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}
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if (found)
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dem[indx].data[x][y]+=(short)rint(height);
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return found;
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}
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double Distance(struct site site1, struct site site2)
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{
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/* This function returns the great circle distance
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in miles between any two site locations. */
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double lat1, lon1, lat2, lon2, distance;
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lat1=site1.lat*DEG2RAD;
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lon1=site1.lon*DEG2RAD;
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lat2=site2.lat*DEG2RAD;
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lon2=site2.lon*DEG2RAD;
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distance=3959.0*acos(sin(lat1)*sin(lat2)+cos(lat1)*cos(lat2)*cos((lon1)-(lon2)));
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return distance;
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}
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double Azimuth(struct site source, struct site destination)
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{
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/* This function returns the azimuth (in degrees) to the
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destination as seen from the location of the source. */
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double dest_lat, dest_lon, src_lat, src_lon,
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beta, azimuth, diff, num, den, fraction;
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dest_lat=destination.lat*DEG2RAD;
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dest_lon=destination.lon*DEG2RAD;
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src_lat=source.lat*DEG2RAD;
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src_lon=source.lon*DEG2RAD;
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/* Calculate Surface Distance */
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beta=acos(sin(src_lat)*sin(dest_lat)+cos(src_lat)*cos(dest_lat)*cos(src_lon-dest_lon));
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/* Calculate Azimuth */
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num=sin(dest_lat)-(sin(src_lat)*cos(beta));
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den=cos(src_lat)*sin(beta);
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fraction=num/den;
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/* Trap potential problems in acos() due to rounding */
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if (fraction>=1.0)
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fraction=1.0;
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if (fraction<=-1.0)
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fraction=-1.0;
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/* Calculate azimuth */
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azimuth=acos(fraction);
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/* Reference it to True North */
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diff=dest_lon-src_lon;
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if (diff<=-PI)
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diff+=TWOPI;
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if (diff>=PI)
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diff-=TWOPI;
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if (diff>0.0)
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azimuth=TWOPI-azimuth;
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return (azimuth/DEG2RAD);
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}
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double ElevationAngle(struct site source, struct site destination)
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{
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/* This function returns the angle of elevation (in degrees)
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of the destination as seen from the source location.
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A positive result represents an angle of elevation (uptilt),
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while a negative result represents an angle of depression
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(downtilt), as referenced to a normal to the center of
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the earth. */
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register double a, b, dx;
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a=GetElevation(destination)+destination.alt+earthradius;
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b=GetElevation(source)+source.alt+earthradius;
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dx=5280.0*Distance(source,destination);
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/* Apply the Law of Cosines */
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return ((180.0*(acos(((b*b)+(dx*dx)-(a*a))/(2.0*b*dx)))/PI)-90.0);
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}
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void ReadPath(struct site source, struct site destination)
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{
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/* This function generates a sequence of latitude and
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longitude positions between source and destination
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locations along a great circle path, and stores
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elevation and distance information for points
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along that path in the "path" structure. */
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int c;
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double azimuth, distance, lat1, lon1, beta, den, num,
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lat2, lon2, total_distance, dx, dy, path_length,
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miles_per_sample, samples_per_radian=68755.0;
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struct site tempsite;
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lat1=source.lat*DEG2RAD;
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lon1=source.lon*DEG2RAD;
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lat2=destination.lat*DEG2RAD;
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lon2=destination.lon*DEG2RAD;
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samples_per_radian=ppd*57.295833;
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azimuth=Azimuth(source,destination)*DEG2RAD;
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total_distance=Distance(source,destination);
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if (total_distance>(30.0/ppd))
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{
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dx=samples_per_radian*acos(cos(lon1-lon2));
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dy=samples_per_radian*acos(cos(lat1-lat2));
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path_length=sqrt((dx*dx)+(dy*dy));
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miles_per_sample=total_distance/path_length;
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}
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else
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{
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c=0;
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dx=0.0;
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dy=0.0;
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path_length=0.0;
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miles_per_sample=0.0;
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total_distance=0.0;
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lat1=lat1/DEG2RAD;
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lon1=lon1/DEG2RAD;
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path.lat[c]=lat1;
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path.lon[c]=lon1;
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path.elevation[c]=GetElevation(source);
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path.distance[c]=0.0;
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}
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for (distance=0.0, c=0; (total_distance!=0.0 && distance<=total_distance && c<ARRAYSIZE); c++, distance=miles_per_sample*(double)c)
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{
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beta=distance/3959.0;
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lat2=asin(sin(lat1)*cos(beta)+cos(azimuth)*sin(beta)*cos(lat1));
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num=cos(beta)-(sin(lat1)*sin(lat2));
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den=cos(lat1)*cos(lat2);
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if (azimuth==0.0 && (beta>HALFPI-lat1))
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lon2=lon1+PI;
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else if (azimuth==HALFPI && (beta>HALFPI+lat1))
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lon2=lon1+PI;
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else if (fabs(num/den)>1.0)
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lon2=lon1;
|
|
|
|
else
|
|
{
|
|
if ((PI-azimuth)>=0.0)
|
|
lon2=lon1-arccos(num,den);
|
|
else
|
|
lon2=lon1+arccos(num,den);
|
|
}
|
|
|
|
while (lon2<0.0)
|
|
lon2+=TWOPI;
|
|
|
|
while (lon2>TWOPI)
|
|
lon2-=TWOPI;
|
|
|
|
lat2=lat2/DEG2RAD;
|
|
lon2=lon2/DEG2RAD;
|
|
|
|
path.lat[c]=lat2;
|
|
path.lon[c]=lon2;
|
|
tempsite.lat=lat2;
|
|
tempsite.lon=lon2;
|
|
path.elevation[c]=GetElevation(tempsite);
|
|
path.distance[c]=distance;
|
|
}
|
|
|
|
/* Make sure exact destination point is recorded at path.length-1 */
|
|
|
|
if (c<ARRAYSIZE)
|
|
{
|
|
path.lat[c]=destination.lat;
|
|
path.lon[c]=destination.lon;
|
|
path.elevation[c]=GetElevation(destination);
|
|
path.distance[c]=total_distance;
|
|
c++;
|
|
}
|
|
|
|
if (c<ARRAYSIZE)
|
|
path.length=c;
|
|
else
|
|
path.length=ARRAYSIZE-1;
|
|
}
|
|
|
|
double ElevationAngle2(struct site source, struct site destination, double er)
|
|
{
|
|
/* This function returns the angle of elevation (in degrees)
|
|
of the destination as seen from the source location, UNLESS
|
|
the path between the sites is obstructed, in which case, the
|
|
elevation angle to the first obstruction is returned instead.
|
|
"er" represents the earth radius. */
|
|
|
|
int x;
|
|
char block=0;
|
|
double source_alt, destination_alt, cos_xmtr_angle,
|
|
cos_test_angle, test_alt, elevation, distance,
|
|
source_alt2, first_obstruction_angle=0.0;
|
|
struct path temp;
|
|
|
|
temp=path;
|
|
|
|
ReadPath(source,destination);
|
|
|
|
distance=5280.0*Distance(source,destination);
|
|
source_alt=er+source.alt+GetElevation(source);
|
|
destination_alt=er+destination.alt+GetElevation(destination);
|
|
source_alt2=source_alt*source_alt;
|
|
|
|
/* Calculate the cosine of the elevation angle of the
|
|
destination (receiver) as seen by the source (transmitter). */
|
|
|
|
cos_xmtr_angle=((source_alt2)+(distance*distance)-(destination_alt*destination_alt))/(2.0*source_alt*distance);
|
|
|
|
/* Test all points in between source and destination locations to
|
|
see if the angle to a topographic feature generates a higher
|
|
elevation angle than that produced by the destination. Begin
|
|
at the source since we're interested in identifying the FIRST
|
|
obstruction along the path between source and destination. */
|
|
|
|
for (x=2, block=0; x<path.length && block==0; x++)
|
|
{
|
|
distance=5280.0*path.distance[x];
|
|
|
|
test_alt=earthradius+(path.elevation[x]==0.0?path.elevation[x]:path.elevation[x]+clutter);
|
|
|
|
cos_test_angle=((source_alt2)+(distance*distance)-(test_alt*test_alt))/(2.0*source_alt*distance);
|
|
|
|
/* Compare these two angles to determine if
|
|
an obstruction exists. Since we're comparing
|
|
the cosines of these angles rather than
|
|
the angles themselves, the sense of the
|
|
following "if" statement is reversed from
|
|
what it would be if the angles themselves
|
|
were compared. */
|
|
|
|
if (cos_xmtr_angle>=cos_test_angle)
|
|
{
|
|
block=1;
|
|
first_obstruction_angle=((acos(cos_test_angle))/DEG2RAD)-90.0;
|
|
}
|
|
}
|
|
|
|
if (block)
|
|
elevation=first_obstruction_angle;
|
|
|
|
else
|
|
elevation=((acos(cos_xmtr_angle))/DEG2RAD)-90.0;
|
|
|
|
path=temp;
|
|
|
|
return elevation;
|
|
}
|
|
|
|
double AverageTerrain(struct site source, double azimuthx, double start_distance, double end_distance)
|
|
{
|
|
/* This function returns the average terrain calculated in
|
|
the direction of "azimuth" (degrees) between "start_distance"
|
|
and "end_distance" (miles) from the source location. If
|
|
the terrain is all water (non-critical error), -5000.0 is
|
|
returned. If not enough SDF data has been loaded into
|
|
memory to complete the survey (critical error), then
|
|
-9999.0 is returned. */
|
|
|
|
int c, samples, endpoint;
|
|
double beta, lat1, lon1, lat2, lon2, num, den, azimuth, terrain=0.0;
|
|
struct site destination;
|
|
|
|
lat1=source.lat*DEG2RAD;
|
|
lon1=source.lon*DEG2RAD;
|
|
|
|
/* Generate a path of elevations between the source
|
|
location and the remote location provided. */
|
|
|
|
beta=end_distance/3959.0;
|
|
|
|
azimuth=DEG2RAD*azimuthx;
|
|
|
|
lat2=asin(sin(lat1)*cos(beta)+cos(azimuth)*sin(beta)*cos(lat1));
|
|
num=cos(beta)-(sin(lat1)*sin(lat2));
|
|
den=cos(lat1)*cos(lat2);
|
|
|
|
if (azimuth==0.0 && (beta>HALFPI-lat1))
|
|
lon2=lon1+PI;
|
|
|
|
else if (azimuth==HALFPI && (beta>HALFPI+lat1))
|
|
lon2=lon1+PI;
|
|
|
|
else if (fabs(num/den)>1.0)
|
|
lon2=lon1;
|
|
|
|
else
|
|
{
|
|
if ((PI-azimuth)>=0.0)
|
|
lon2=lon1-arccos(num,den);
|
|
else
|
|
lon2=lon1+arccos(num,den);
|
|
}
|
|
|
|
while (lon2<0.0)
|
|
lon2+=TWOPI;
|
|
|
|
while (lon2>TWOPI)
|
|
lon2-=TWOPI;
|
|
|
|
lat2=lat2/DEG2RAD;
|
|
lon2=lon2/DEG2RAD;
|
|
|
|
destination.lat=lat2;
|
|
destination.lon=lon2;
|
|
|
|
/* If SDF data is missing for the endpoint of
|
|
the radial, then the average terrain cannot
|
|
be accurately calculated. Return -9999.0 */
|
|
|
|
if (GetElevation(destination)<-4999.0)
|
|
return (-9999.0);
|
|
else
|
|
{
|
|
ReadPath(source,destination);
|
|
|
|
endpoint=path.length;
|
|
|
|
/* Shrink the length of the radial if the
|
|
outermost portion is not over U.S. land. */
|
|
|
|
for (c=endpoint-1; c>=0 && path.elevation[c]==0.0; c--);
|
|
|
|
endpoint=c+1;
|
|
|
|
for (c=0, samples=0; c<endpoint; c++)
|
|
{
|
|
if (path.distance[c]>=start_distance)
|
|
{
|
|
terrain+=(path.elevation[c]==0.0?path.elevation[c]:path.elevation[c]+clutter);
|
|
samples++;
|
|
}
|
|
}
|
|
|
|
if (samples==0)
|
|
terrain=-5000.0; /* No land */
|
|
else
|
|
terrain=(terrain/(double)samples);
|
|
|
|
return terrain;
|
|
}
|
|
}
|
|
|
|
double haat(struct site antenna)
|
|
{
|
|
/* This function returns the antenna's Height Above Average
|
|
Terrain (HAAT) based on FCC Part 73.313(d). If a critical
|
|
error occurs, such as a lack of SDF data to complete the
|
|
survey, -5000.0 is returned. */
|
|
|
|
int azi, c;
|
|
char error=0;
|
|
double terrain, avg_terrain, haat, sum=0.0;
|
|
|
|
/* Calculate the average terrain between 2 and 10 miles
|
|
from the antenna site at azimuths of 0, 45, 90, 135,
|
|
180, 225, 270, and 315 degrees. */
|
|
|
|
for (c=0, azi=0; azi<=315 && error==0; azi+=45)
|
|
{
|
|
terrain=AverageTerrain(antenna, (double)azi, 2.0, 10.0);
|
|
|
|
if (terrain<-9998.0) /* SDF data is missing */
|
|
error=1;
|
|
|
|
if (terrain>-4999.0) /* It's land, not water */
|
|
{
|
|
sum+=terrain; /* Sum of averages */
|
|
c++;
|
|
}
|
|
}
|
|
|
|
if (error)
|
|
return -5000.0;
|
|
else
|
|
{
|
|
avg_terrain=(sum/(double)c);
|
|
haat=(antenna.alt+GetElevation(antenna))-avg_terrain;
|
|
return haat;
|
|
}
|
|
}
|
|
double ReadBearing(char *input)
|
|
{
|
|
/* This function takes numeric input in the form of a character
|
|
string, and returns an equivalent bearing in degrees as a
|
|
decimal number (double). The input may either be expressed
|
|
in decimal format (40.139722) or degree, minute, second
|
|
format (40 08 23). This function also safely handles
|
|
extra spaces found either leading, trailing, or
|
|
embedded within the numbers expressed in the
|
|
input string. Decimal seconds are permitted. */
|
|
|
|
double seconds, bearing=0.0;
|
|
char string[20];
|
|
int a, b, length, degrees, minutes;
|
|
|
|
/* Copy "input" to "string", and ignore any extra
|
|
spaces that might be present in the process. */
|
|
|
|
string[0]=0;
|
|
length=strlen(input);
|
|
|
|
for (a=0, b=0; a<length && a<18; a++)
|
|
{
|
|
if ((input[a]!=32 && input[a]!='\n') || (input[a]==32 && input[a+1]!=32 && input[a+1]!='\n' && b!=0))
|
|
{
|
|
string[b]=input[a];
|
|
b++;
|
|
}
|
|
}
|
|
|
|
string[b]=0;
|
|
|
|
/* Count number of spaces in the clean string. */
|
|
|
|
length=strlen(string);
|
|
|
|
for (a=0, b=0; a<length; a++)
|
|
if (string[a]==32)
|
|
b++;
|
|
|
|
if (b==0) /* Decimal Format (40.139722) */
|
|
sscanf(string,"%lf",&bearing);
|
|
|
|
if (b==2) /* Degree, Minute, Second Format (40 08 23.xx) */
|
|
{
|
|
sscanf(string,"%d %d %lf",°rees, &minutes, &seconds);
|
|
|
|
bearing=fabs((double)degrees);
|
|
bearing+=fabs(((double)minutes)/60.0);
|
|
bearing+=fabs(seconds/3600.0);
|
|
|
|
if ((degrees<0) || (minutes<0) || (seconds<0.0))
|
|
bearing=-bearing;
|
|
}
|
|
|
|
/* Anything else returns a 0.0 */
|
|
|
|
if (bearing>360.0 || bearing<-360.0)
|
|
bearing=0.0;
|
|
|
|
return bearing;
|
|
}
|
|
|
|
void LoadPAT(char *filename)
|
|
{
|
|
/* This function reads and processes antenna pattern (.az
|
|
and .el) files that correspond in name to previously
|
|
loaded ss .lrp files. */
|
|
|
|
int a, b, w, x, y, z, last_index, next_index, span;
|
|
char string[255], azfile[255], elfile[255], *pointer=NULL, *s=NULL;
|
|
float az, xx, elevation, amplitude, rotation, valid1, valid2,
|
|
delta, azimuth[361], azimuth_pattern[361], el_pattern[10001],
|
|
elevation_pattern[361][1001], slant_angle[361], tilt,
|
|
mechanical_tilt=0.0, tilt_azimuth, tilt_increment, sum;
|
|
FILE *fd=NULL;
|
|
unsigned char read_count[10001];
|
|
|
|
for (x=0; filename[x]!='.' && filename[x]!=0 && x<250; x++)
|
|
{
|
|
azfile[x]=filename[x];
|
|
elfile[x]=filename[x];
|
|
}
|
|
|
|
azfile[x]='.';
|
|
azfile[x+1]='a';
|
|
azfile[x+2]='z';
|
|
azfile[x+3]=0;
|
|
|
|
elfile[x]='.';
|
|
elfile[x+1]='e';
|
|
elfile[x+2]='l';
|
|
elfile[x+3]=0;
|
|
|
|
rotation=0.0;
|
|
|
|
got_azimuth_pattern=0;
|
|
got_elevation_pattern=0;
|
|
|
|
/* Load .az antenna pattern file */
|
|
|
|
fd=fopen(azfile,"r");
|
|
|
|
if (fd!=NULL)
|
|
{
|
|
/* Clear azimuth pattern array */
|
|
|
|
for (x=0; x<=360; x++)
|
|
{
|
|
azimuth[x]=0.0;
|
|
read_count[x]=0;
|
|
}
|
|
|
|
|
|
/* Read azimuth pattern rotation
|
|
in degrees measured clockwise
|
|
from true North. */
|
|
|
|
s=fgets(string,254,fd);
|
|
pointer=strchr(string,';');
|
|
|
|
if (pointer!=NULL)
|
|
*pointer=0;
|
|
|
|
sscanf(string,"%f",&rotation);
|
|
|
|
|
|
/* Read azimuth (degrees) and corresponding
|
|
normalized field radiation pattern amplitude
|
|
(0.0 to 1.0) until EOF is reached. */
|
|
|
|
s=fgets(string,254,fd);
|
|
pointer=strchr(string,';');
|
|
|
|
if (pointer!=NULL)
|
|
*pointer=0;
|
|
|
|
sscanf(string,"%f %f",&az, &litude);
|
|
|
|
do
|
|
{
|
|
x=(int)rintf(az);
|
|
|
|
if (x>=0 && x<=360 && fd!=NULL)
|
|
{
|
|
azimuth[x]+=amplitude;
|
|
read_count[x]++;
|
|
}
|
|
|
|
s=fgets(string,254,fd);
|
|
pointer=strchr(string,';');
|
|
|
|
if (pointer!=NULL)
|
|
*pointer=0;
|
|
|
|
sscanf(string,"%f %f",&az, &litude);
|
|
|
|
} while (feof(fd)==0);
|
|
|
|
fclose(fd);
|
|
|
|
|
|
/* Handle 0=360 degree ambiguity */
|
|
|
|
if ((read_count[0]==0) && (read_count[360]!=0))
|
|
{
|
|
read_count[0]=read_count[360];
|
|
azimuth[0]=azimuth[360];
|
|
}
|
|
|
|
if ((read_count[0]!=0) && (read_count[360]==0))
|
|
{
|
|
read_count[360]=read_count[0];
|
|
azimuth[360]=azimuth[0];
|
|
}
|
|
|
|
/* Average pattern values in case more than
|
|
one was read for each degree of azimuth. */
|
|
|
|
for (x=0; x<=360; x++)
|
|
{
|
|
if (read_count[x]>1)
|
|
azimuth[x]/=(float)read_count[x];
|
|
}
|
|
|
|
/* Interpolate missing azimuths
|
|
to completely fill the array */
|
|
|
|
last_index=-1;
|
|
next_index=-1;
|
|
|
|
for (x=0; x<=360; x++)
|
|
{
|
|
if (read_count[x]!=0)
|
|
{
|
|
if (last_index==-1)
|
|
last_index=x;
|
|
else
|
|
next_index=x;
|
|
}
|
|
|
|
if (last_index!=-1 && next_index!=-1)
|
|
{
|
|
valid1=azimuth[last_index];
|
|
valid2=azimuth[next_index];
|
|
|
|
span=next_index-last_index;
|
|
delta=(valid2-valid1)/(float)span;
|
|
|
|
for (y=last_index+1; y<next_index; y++)
|
|
azimuth[y]=azimuth[y-1]+delta;
|
|
|
|
last_index=y;
|
|
next_index=-1;
|
|
}
|
|
}
|
|
|
|
/* Perform azimuth pattern rotation
|
|
and load azimuth_pattern[361] with
|
|
azimuth pattern data in its final form. */
|
|
|
|
for (x=0; x<360; x++)
|
|
{
|
|
y=x+(int)rintf(rotation);
|
|
|
|
if (y>=360)
|
|
y-=360;
|
|
|
|
azimuth_pattern[y]=azimuth[x];
|
|
}
|
|
|
|
azimuth_pattern[360]=azimuth_pattern[0];
|
|
|
|
got_azimuth_pattern=255;
|
|
}
|
|
|
|
/* Read and process .el file */
|
|
|
|
fd=fopen(elfile,"r");
|
|
|
|
if (fd!=NULL)
|
|
{
|
|
for (x=0; x<=10000; x++)
|
|
{
|
|
el_pattern[x]=0.0;
|
|
read_count[x]=0;
|
|
}
|
|
|
|
/* Read mechanical tilt (degrees) and
|
|
tilt azimuth in degrees measured
|
|
clockwise from true North. */
|
|
|
|
s=fgets(string,254,fd);
|
|
pointer=strchr(string,';');
|
|
|
|
if (pointer!=NULL)
|
|
*pointer=0;
|
|
|
|
sscanf(string,"%f %f",&mechanical_tilt, &tilt_azimuth);
|
|
|
|
/* Read elevation (degrees) and corresponding
|
|
normalized field radiation pattern amplitude
|
|
(0.0 to 1.0) until EOF is reached. */
|
|
|
|
s=fgets(string,254,fd);
|
|
pointer=strchr(string,';');
|
|
|
|
if (pointer!=NULL)
|
|
*pointer=0;
|
|
|
|
sscanf(string,"%f %f", &elevation, &litude);
|
|
|
|
while (feof(fd)==0)
|
|
{
|
|
/* Read in normalized radiated field values
|
|
for every 0.01 degrees of elevation between
|
|
-10.0 and +90.0 degrees */
|
|
|
|
x=(int)rintf(100.0*(elevation+10.0));
|
|
|
|
if (x>=0 && x<=10000)
|
|
{
|
|
el_pattern[x]+=amplitude;
|
|
read_count[x]++;
|
|
}
|
|
|
|
s=fgets(string,254,fd);
|
|
pointer=strchr(string,';');
|
|
|
|
if (pointer!=NULL)
|
|
*pointer=0;
|
|
|
|
sscanf(string,"%f %f", &elevation, &litude);
|
|
}
|
|
|
|
fclose(fd);
|
|
|
|
/* Average the field values in case more than
|
|
one was read for each 0.01 degrees of elevation. */
|
|
|
|
for (x=0; x<=10000; x++)
|
|
{
|
|
if (read_count[x]>1)
|
|
el_pattern[x]/=(float)read_count[x];
|
|
}
|
|
|
|
/* Interpolate between missing elevations (if
|
|
any) to completely fill the array and provide
|
|
radiated field values for every 0.01 degrees of
|
|
elevation. */
|
|
|
|
last_index=-1;
|
|
next_index=-1;
|
|
|
|
for (x=0; x<=10000; x++)
|
|
{
|
|
if (read_count[x]!=0)
|
|
{
|
|
if (last_index==-1)
|
|
last_index=x;
|
|
else
|
|
next_index=x;
|
|
}
|
|
|
|
if (last_index!=-1 && next_index!=-1)
|
|
{
|
|
valid1=el_pattern[last_index];
|
|
valid2=el_pattern[next_index];
|
|
|
|
span=next_index-last_index;
|
|
delta=(valid2-valid1)/(float)span;
|
|
|
|
for (y=last_index+1; y<next_index; y++)
|
|
el_pattern[y]=el_pattern[y-1]+delta;
|
|
|
|
last_index=y;
|
|
next_index=-1;
|
|
}
|
|
}
|
|
|
|
/* Fill slant_angle[] array with offset angles based
|
|
on the antenna's mechanical beam tilt (if any)
|
|
and tilt direction (azimuth). */
|
|
|
|
if (mechanical_tilt==0.0)
|
|
{
|
|
for (x=0; x<=360; x++)
|
|
slant_angle[x]=0.0;
|
|
}
|
|
|
|
else
|
|
{
|
|
tilt_increment=mechanical_tilt/90.0;
|
|
|
|
for (x=0; x<=360; x++)
|
|
{
|
|
xx=(float)x;
|
|
y=(int)rintf(tilt_azimuth+xx);
|
|
|
|
while (y>=360)
|
|
y-=360;
|
|
|
|
while (y<0)
|
|
y+=360;
|
|
|
|
if (x<=180)
|
|
slant_angle[y]=-(tilt_increment*(90.0-xx));
|
|
|
|
if (x>180)
|
|
slant_angle[y]=-(tilt_increment*(xx-270.0));
|
|
}
|
|
}
|
|
|
|
slant_angle[360]=slant_angle[0]; /* 360 degree wrap-around */
|
|
|
|
for (w=0; w<=360; w++)
|
|
{
|
|
tilt=slant_angle[w];
|
|
|
|
/** Convert tilt angle to
|
|
an array index offset **/
|
|
|
|
y=(int)rintf(100.0*tilt);
|
|
|
|
/* Copy shifted el_pattern[10001] field
|
|
values into elevation_pattern[361][1001]
|
|
at the corresponding azimuth, downsampling
|
|
(averaging) along the way in chunks of 10. */
|
|
|
|
for (x=y, z=0; z<=1000; x+=10, z++)
|
|
{
|
|
for (sum=0.0, a=0; a<10; a++)
|
|
{
|
|
b=a+x;
|
|
|
|
if (b>=0 && b<=10000)
|
|
sum+=el_pattern[b];
|
|
if (b<0)
|
|
sum+=el_pattern[0];
|
|
if (b>10000)
|
|
sum+=el_pattern[10000];
|
|
}
|
|
|
|
elevation_pattern[w][z]=sum/10.0;
|
|
}
|
|
}
|
|
|
|
got_elevation_pattern=255;
|
|
}
|
|
|
|
for (x=0; x<=360; x++)
|
|
{
|
|
for (y=0; y<=1000; y++)
|
|
{
|
|
if (got_elevation_pattern)
|
|
elevation=elevation_pattern[x][y];
|
|
else
|
|
elevation=1.0;
|
|
|
|
if (got_azimuth_pattern)
|
|
az=azimuth_pattern[x];
|
|
else
|
|
az=1.0;
|
|
|
|
LR.antenna_pattern[x][y]=az*elevation;
|
|
}
|
|
}
|
|
}
|
|
|
|
int LoadSDF_SDF(char *name, int winfiles)
|
|
{
|
|
/* This function reads uncompressed ss Data Files (.sdf)
|
|
containing digital elevation model data into memory.
|
|
Elevation data, maximum and minimum elevations, and
|
|
quadrangle limits are stored in the first available
|
|
dem[] structure. */
|
|
|
|
int x, y, data, indx, minlat, minlon, maxlat, maxlon,j;
|
|
char found, free_page=0, line[20], jline[20], sdf_file[255],
|
|
path_plus_name[255], *s=NULL,*junk=NULL;
|
|
|
|
|
|
FILE *fd;
|
|
|
|
for (x=0; name[x]!='.' && name[x]!=0 && x<250; x++)
|
|
sdf_file[x]=name[x];
|
|
|
|
sdf_file[x]=0;
|
|
|
|
/* Parse filename for minimum latitude and longitude values */
|
|
if(winfiles==1){
|
|
sscanf(sdf_file,"%d=%d=%d=%d",&minlat,&maxlat,&minlon,&maxlon);
|
|
}else{
|
|
sscanf(sdf_file,"%d:%d:%d:%d",&minlat,&maxlat,&minlon,&maxlon);
|
|
}
|
|
|
|
sdf_file[x]='.';
|
|
sdf_file[x+1]='s';
|
|
sdf_file[x+2]='d';
|
|
sdf_file[x+3]='f';
|
|
sdf_file[x+4]=0;
|
|
|
|
/* Is it already in memory? */
|
|
|
|
|
|
for (indx=0, found=0; indx<MAXPAGES && found==0; indx++)
|
|
{
|
|
if (minlat==dem[indx].min_north && minlon==dem[indx].min_west && maxlat==dem[indx].max_north && maxlon==dem[indx].max_west)
|
|
found=1;
|
|
}
|
|
|
|
/* Is room available to load it? */
|
|
|
|
if (found==0)
|
|
{
|
|
for (indx=0, free_page=0; indx<MAXPAGES && free_page==0; indx++)
|
|
if (dem[indx].max_north==-90)
|
|
free_page=1;
|
|
}
|
|
|
|
indx--;
|
|
|
|
if (free_page && found==0 && indx>=0 && indx<MAXPAGES)
|
|
{
|
|
/* Search for SDF file in current working directory first */
|
|
|
|
strncpy(path_plus_name,sdf_file,255);
|
|
|
|
|
|
fd=fopen(path_plus_name,"rb");
|
|
|
|
if (fd==NULL)
|
|
{
|
|
/* Next, try loading SDF file from path specified
|
|
in $HOME/.ss_path file or by -d argument */
|
|
|
|
strncpy(path_plus_name,sdf_path,255);
|
|
strncat(path_plus_name,sdf_file,255);
|
|
|
|
|
|
|
|
fd=fopen(path_plus_name,"rb");
|
|
}
|
|
|
|
if (fd!=NULL)
|
|
{
|
|
if (debug==1){
|
|
fprintf(stdout,"Loading \"%s\" into page %d...",path_plus_name,indx+1);
|
|
fflush(stdout);
|
|
}
|
|
|
|
s=fgets(line,19,fd);
|
|
sscanf(line,"%d",&dem[indx].max_west);
|
|
|
|
s=fgets(line,19,fd);
|
|
sscanf(line,"%d",&dem[indx].min_north);
|
|
|
|
s=fgets(line,19,fd);
|
|
sscanf(line,"%d",&dem[indx].min_west);
|
|
|
|
s=fgets(line,19,fd);
|
|
sscanf(line,"%d",&dem[indx].max_north);
|
|
|
|
/*
|
|
Here X lines of DEM will be read until IPPD is reached.
|
|
Each .sdf tile contains 1200x1200 = 1.44M 'points'
|
|
Each point is sampled for 1200 resolution!
|
|
|
|
|
|
*/
|
|
for (x=0; x<ippd; x++)
|
|
{
|
|
for (y=0; y<ippd; y++)
|
|
{
|
|
|
|
for (j=0; j<jgets; j++)
|
|
{
|
|
junk=fgets(jline,19,fd);
|
|
}
|
|
|
|
s=fgets(line,19,fd);
|
|
|
|
data=atoi(line);
|
|
|
|
dem[indx].data[x][y]=data;
|
|
dem[indx].signal[x][y]=0;
|
|
dem[indx].mask[x][y]=0;
|
|
|
|
if (data>dem[indx].max_el)
|
|
dem[indx].max_el=data;
|
|
|
|
if (data<dem[indx].min_el)
|
|
dem[indx].min_el=data;
|
|
|
|
}
|
|
|
|
if (ippd==600){
|
|
for (j=0; j<IPPD; j++)
|
|
{
|
|
junk=fgets(jline,19,fd);
|
|
}
|
|
}
|
|
if (ippd==300){
|
|
for (j=0; j<IPPD; j++)
|
|
{
|
|
junk=fgets(jline,19,fd);
|
|
junk=fgets(jline,19,fd);
|
|
junk=fgets(jline,19,fd);
|
|
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
fclose(fd);
|
|
|
|
if (dem[indx].min_el<min_elevation)
|
|
min_elevation=dem[indx].min_el;
|
|
|
|
if (dem[indx].max_el>max_elevation)
|
|
max_elevation=dem[indx].max_el;
|
|
|
|
if (max_north==-90)
|
|
max_north=dem[indx].max_north;
|
|
|
|
else if (dem[indx].max_north>max_north)
|
|
max_north=dem[indx].max_north;
|
|
|
|
if (min_north==90)
|
|
min_north=dem[indx].min_north;
|
|
|
|
else if (dem[indx].min_north<min_north)
|
|
min_north=dem[indx].min_north;
|
|
|
|
if (max_west==-1)
|
|
max_west=dem[indx].max_west;
|
|
|
|
else
|
|
{
|
|
if (abs(dem[indx].max_west-max_west)<180)
|
|
{
|
|
if (dem[indx].max_west>max_west)
|
|
max_west=dem[indx].max_west;
|
|
}
|
|
|
|
else
|
|
{
|
|
if (dem[indx].max_west<max_west)
|
|
max_west=dem[indx].max_west;
|
|
}
|
|
}
|
|
|
|
if (min_west==360)
|
|
min_west=dem[indx].min_west;
|
|
|
|
else
|
|
{
|
|
if (fabs(dem[indx].min_west-min_west)<180.0)
|
|
{
|
|
if (dem[indx].min_west<min_west)
|
|
min_west=dem[indx].min_west;
|
|
}
|
|
|
|
else
|
|
{
|
|
if (dem[indx].min_west>min_west)
|
|
min_west=dem[indx].min_west;
|
|
}
|
|
}
|
|
|
|
|
|
return 1;
|
|
}
|
|
|
|
else
|
|
return -1;
|
|
}
|
|
|
|
else
|
|
return 0;
|
|
}
|
|
char LoadSDF(char *name, int winfiles)
|
|
{
|
|
/* This function loads the requested SDF file from the filesystem.
|
|
It first tries to invoke the LoadSDF_SDF() function to load an
|
|
uncompressed SDF file (since uncompressed files load slightly
|
|
faster). If that attempt fails, then it tries to load a
|
|
compressed SDF file by invoking the LoadSDF_BZ() function.
|
|
If that fails, then we can assume that no elevation data
|
|
exists for the region requested, and that the region
|
|
requested must be entirely over water. */
|
|
|
|
int x, y, indx, minlat, minlon, maxlat, maxlon;
|
|
char found, free_page=0;
|
|
int return_value=-1;
|
|
|
|
return_value=LoadSDF_SDF(name, winfiles);
|
|
|
|
|
|
/* If neither format can be found, then assume the area is water. */
|
|
|
|
if (return_value==0 || return_value==-1)
|
|
{
|
|
|
|
|
|
|
|
if(winfiles==1){
|
|
sscanf(name,"%d=%d=%d=%d",&minlat,&maxlat,&minlon,&maxlon);
|
|
}else{
|
|
sscanf(name,"%d:%d:%d:%d",&minlat,&maxlat,&minlon,&maxlon);
|
|
}
|
|
/* Is it already in memory? */
|
|
|
|
for (indx=0, found=0; indx<MAXPAGES && found==0; indx++)
|
|
{
|
|
if (minlat==dem[indx].min_north && minlon==dem[indx].min_west && maxlat==dem[indx].max_north && maxlon==dem[indx].max_west)
|
|
found=1;
|
|
}
|
|
|
|
/* Is room available to load it? */
|
|
|
|
if (found==0)
|
|
{
|
|
for (indx=0, free_page=0; indx<MAXPAGES && free_page==0; indx++)
|
|
if (dem[indx].max_north==-90)
|
|
free_page=1;
|
|
}
|
|
|
|
indx--;
|
|
|
|
if (free_page && found==0 && indx>=0 && indx<MAXPAGES)
|
|
{
|
|
if(debug==1){
|
|
fprintf(stdout,"Region \"%s\" assumed as sea-level into page %d...",name,indx+1);
|
|
fflush(stdout);
|
|
}
|
|
|
|
dem[indx].max_west=maxlon;
|
|
dem[indx].min_north=minlat;
|
|
dem[indx].min_west=minlon;
|
|
dem[indx].max_north=maxlat;
|
|
|
|
/* Fill DEM with sea-level topography */
|
|
|
|
for (x=0; x<ippd; x++)
|
|
for (y=0; y<ippd; y++)
|
|
{
|
|
dem[indx].data[x][y]=0;
|
|
dem[indx].signal[x][y]=0;
|
|
dem[indx].mask[x][y]=0;
|
|
|
|
if (dem[indx].min_el>0)
|
|
dem[indx].min_el=0;
|
|
}
|
|
|
|
if (dem[indx].min_el<min_elevation)
|
|
min_elevation=dem[indx].min_el;
|
|
|
|
if (dem[indx].max_el>max_elevation)
|
|
max_elevation=dem[indx].max_el;
|
|
|
|
if (max_north==-90)
|
|
max_north=dem[indx].max_north;
|
|
|
|
else if (dem[indx].max_north>max_north)
|
|
max_north=dem[indx].max_north;
|
|
|
|
if (min_north==90)
|
|
min_north=dem[indx].min_north;
|
|
|
|
else if (dem[indx].min_north<min_north)
|
|
min_north=dem[indx].min_north;
|
|
|
|
if (max_west==-1)
|
|
max_west=dem[indx].max_west;
|
|
|
|
else
|
|
{
|
|
if (abs(dem[indx].max_west-max_west)<180)
|
|
{
|
|
if (dem[indx].max_west>max_west)
|
|
max_west=dem[indx].max_west;
|
|
}
|
|
|
|
else
|
|
{
|
|
if (dem[indx].max_west<max_west)
|
|
max_west=dem[indx].max_west;
|
|
}
|
|
}
|
|
|
|
if (min_west==360)
|
|
min_west=dem[indx].min_west;
|
|
|
|
else
|
|
{
|
|
if (abs(dem[indx].min_west-min_west)<180)
|
|
{
|
|
if (dem[indx].min_west<min_west)
|
|
min_west=dem[indx].min_west;
|
|
}
|
|
|
|
else
|
|
{
|
|
if (dem[indx].min_west>min_west)
|
|
min_west=dem[indx].min_west;
|
|
}
|
|
}
|
|
|
|
return_value=1;
|
|
}
|
|
}
|
|
|
|
return return_value;
|
|
}
|
|
|
|
void PlotLOSPath(struct site source, struct site destination, char mask_value, FILE *fd)
|
|
{
|
|
/* This function analyzes the path between the source and
|
|
destination locations. It determines which points along
|
|
the path have line-of-sight visibility to the source.
|
|
Points along with path having line-of-sight visibility
|
|
to the source at an AGL altitude equal to that of the
|
|
destination location are stored by setting bit 1 in the
|
|
mask[][] array, which are displayed in green when PPM
|
|
maps are later generated by ss. */
|
|
|
|
char block;
|
|
int x, y;
|
|
register double cos_xmtr_angle, cos_test_angle, test_alt;
|
|
double distance, rx_alt, tx_alt;
|
|
|
|
ReadPath(source,destination);
|
|
|
|
for (y=0; y<path.length; y++)
|
|
{
|
|
/* Test this point only if it hasn't been already
|
|
tested and found to be free of obstructions. */
|
|
|
|
if ((GetMask(path.lat[y],path.lon[y])&mask_value)==0)
|
|
{
|
|
distance=5280.0*path.distance[y];
|
|
tx_alt=earthradius+source.alt+path.elevation[0];
|
|
rx_alt=earthradius+destination.alt+path.elevation[y];
|
|
|
|
/* Calculate the cosine of the elevation of the
|
|
transmitter as seen at the temp rx point. */
|
|
|
|
cos_xmtr_angle=((rx_alt*rx_alt)+(distance*distance)-(tx_alt*tx_alt))/(2.0*rx_alt*distance);
|
|
|
|
for (x=y, block=0; x>=0 && block==0; x--)
|
|
{
|
|
distance=5280.0*(path.distance[y]-path.distance[x]);
|
|
test_alt=earthradius+(path.elevation[x]==0.0?path.elevation[x]:path.elevation[x]+clutter);
|
|
|
|
cos_test_angle=((rx_alt*rx_alt)+(distance*distance)-(test_alt*test_alt))/(2.0*rx_alt*distance);
|
|
|
|
/* Compare these two angles to determine if
|
|
an obstruction exists. Since we're comparing
|
|
the cosines of these angles rather than
|
|
the angles themselves, the following "if"
|
|
statement is reversed from what it would
|
|
be if the actual angles were compared. */
|
|
|
|
if (cos_xmtr_angle>=cos_test_angle)
|
|
block=1;
|
|
}
|
|
|
|
if (block==0)
|
|
OrMask(path.lat[y],path.lon[y],mask_value);
|
|
}
|
|
}
|
|
}
|
|
|
|
void PlotPropPath(struct site source, struct site destination, unsigned char mask_value, FILE *fd, int propmodel, int knifeedge)
|
|
{
|
|
|
|
int x, y, ifs, ofs, errnum;
|
|
char block=0, strmode[100];
|
|
double loss, azimuth, pattern=0.0,
|
|
xmtr_alt, dest_alt, xmtr_alt2, dest_alt2,
|
|
cos_rcvr_angle, cos_test_angle=0.0, test_alt,
|
|
elevation=0.0, distance=0.0, radius=0.0, four_thirds_earth,
|
|
field_strength=0.0, rxp, dBm, txelev, dkm, diffloss, lastdiffloss;
|
|
struct site temp;
|
|
|
|
radius = Distance(source,destination);
|
|
|
|
ReadPath(source,destination);
|
|
|
|
four_thirds_earth=FOUR_THIRDS*EARTHRADIUS;
|
|
|
|
/* Copy elevations plus clutter along path into the elev[] array. */
|
|
lastdiffloss=1;
|
|
|
|
for (x=1; x<path.length-1; x++)
|
|
elev[x+2]=(path.elevation[x]==0.0?path.elevation[x]*METERS_PER_FOOT:(clutter+path.elevation[x])*METERS_PER_FOOT);
|
|
|
|
/* Copy ending points without clutter */
|
|
|
|
elev[2]=path.elevation[0]*METERS_PER_FOOT;
|
|
txelev=elev[2]+(source.alt*METERS_PER_FOOT);
|
|
|
|
elev[path.length+1]=path.elevation[path.length-1]*METERS_PER_FOOT;
|
|
|
|
/* Since the only energy the Longley-Rice model considers
|
|
reaching the destination is based on what is scattered
|
|
or deflected from the first obstruction along the path,
|
|
we first need to find the location and elevation angle
|
|
of that first obstruction (if it exists). This is done
|
|
using a 4/3rds Earth radius to match the model used by
|
|
Longley-Rice. This information is required for properly
|
|
integrating the antenna's elevation pattern into the
|
|
calculation for overall path loss. */
|
|
|
|
for (y=2; (y<(path.length-1) && path.distance[y]<=max_range); y++)
|
|
{
|
|
/* Process this point only if it
|
|
has not already been processed. */
|
|
|
|
|
|
if ((GetMask(path.lat[y],path.lon[y])&248)!=(mask_value<<3))
|
|
{
|
|
distance=5280.0*path.distance[y];
|
|
xmtr_alt=four_thirds_earth+source.alt+path.elevation[0];
|
|
dest_alt=four_thirds_earth+destination.alt+path.elevation[y];
|
|
dest_alt2=dest_alt*dest_alt;
|
|
xmtr_alt2=xmtr_alt*xmtr_alt;
|
|
|
|
/* Calculate the cosine of the elevation of
|
|
the receiver as seen by the transmitter. */
|
|
|
|
cos_rcvr_angle=((xmtr_alt2)+(distance*distance)-(dest_alt2))/(2.0*xmtr_alt*distance);
|
|
|
|
if (cos_rcvr_angle>1.0)
|
|
cos_rcvr_angle=1.0;
|
|
|
|
if (cos_rcvr_angle<-1.0)
|
|
cos_rcvr_angle=-1.0;
|
|
|
|
if (got_elevation_pattern || fd!=NULL)
|
|
{
|
|
/* Determine the elevation angle to the first obstruction
|
|
along the path IF elevation pattern data is available
|
|
or an output (.ano) file has been designated. */
|
|
|
|
for (x=2, block=0; (x<y && block==0); x++)
|
|
{
|
|
distance=5280.0*path.distance[x];
|
|
|
|
test_alt=four_thirds_earth+(path.elevation[x]==0.0?path.elevation[x]:path.elevation[x]+clutter);
|
|
|
|
/* Calculate the cosine of the elevation
|
|
angle of the terrain (test point)
|
|
as seen by the transmitter. */
|
|
|
|
cos_test_angle=((xmtr_alt2)+(distance*distance)-(test_alt*test_alt))/(2.0*xmtr_alt*distance);
|
|
|
|
if (cos_test_angle>1.0)
|
|
cos_test_angle=1.0;
|
|
|
|
if (cos_test_angle<-1.0)
|
|
cos_test_angle=-1.0;
|
|
|
|
/* Compare these two angles to determine if
|
|
an obstruction exists. Since we're comparing
|
|
the cosines of these angles rather than
|
|
the angles themselves, the sense of the
|
|
following "if" statement is reversed from
|
|
what it would be if the angles themselves
|
|
were compared. */
|
|
|
|
if (cos_rcvr_angle>=cos_test_angle)
|
|
block=1;
|
|
}
|
|
|
|
if (block)
|
|
elevation=((acos(cos_test_angle))/DEG2RAD)-90.0;
|
|
else
|
|
elevation=((acos(cos_rcvr_angle))/DEG2RAD)-90.0;
|
|
}
|
|
|
|
/* Determine attenuation for each point along the
|
|
path using a prop model starting at y=2 (number_of_points = 1), the
|
|
shortest distance terrain can play a role in
|
|
path loss. */
|
|
|
|
elev[0]=y-1; /* (number of points - 1) */
|
|
|
|
/* Distance between elevation samples */
|
|
|
|
elev[1]=METERS_PER_MILE*(path.distance[y]-path.distance[y-1]);
|
|
|
|
/*
|
|
elev[2]=path.elevation[0]*METERS_PER_FOOT;
|
|
elev[path.length+1]=path.elevation[path.length-1]*METERS_PER_FOOT;
|
|
*/
|
|
if(path.elevation[y] < 1){
|
|
path.elevation[y]=1;
|
|
}
|
|
|
|
dkm=(elev[1]*elev[0])/1000; // km
|
|
|
|
switch (propmodel)
|
|
{
|
|
case 1:
|
|
// Longley Rice
|
|
point_to_point(elev,source.alt*METERS_PER_FOOT,
|
|
destination.alt*METERS_PER_FOOT, LR.eps_dielect,
|
|
LR.sgm_conductivity, LR.eno_ns_surfref, LR.frq_mhz,
|
|
LR.radio_climate, LR.pol, LR.conf, LR.rel, loss,
|
|
strmode, errnum);
|
|
break;
|
|
case 3:
|
|
//HATA urban
|
|
loss=HataLinkdB(LR.frq_mhz,txelev,path.elevation[y]+(destination.alt*METERS_PER_FOOT),dkm, 1);
|
|
break;
|
|
case 4:
|
|
//HATA suburban
|
|
loss=HataLinkdB(LR.frq_mhz,txelev,path.elevation[y]+(destination.alt*METERS_PER_FOOT),dkm, 2);
|
|
break;
|
|
case 5:
|
|
//HATA open
|
|
loss=HataLinkdB(LR.frq_mhz,txelev,path.elevation[y]+(destination.alt*METERS_PER_FOOT),dkm, 3);
|
|
break;
|
|
case 6:
|
|
// COST231-HATA
|
|
loss=CostHataLinkdB(LR.frq_mhz,txelev,path.elevation[y]+(destination.alt*METERS_PER_FOOT),dkm);
|
|
break;
|
|
case 7:
|
|
// ITU-R P.525 Free space path loss
|
|
loss=FsplLinkdB(LR.frq_mhz,dkm);
|
|
//fprintf(stdout,"MHz: %1f KM: %1f = %1fdB",LR.frq_mhz,dkm,loss);
|
|
break;
|
|
|
|
default:
|
|
point_to_point(elev,source.alt*METERS_PER_FOOT,
|
|
destination.alt*METERS_PER_FOOT, LR.eps_dielect,
|
|
LR.sgm_conductivity, LR.eno_ns_surfref, LR.frq_mhz,
|
|
LR.radio_climate, LR.pol, LR.conf, LR.rel, loss,
|
|
strmode, errnum);
|
|
|
|
}
|
|
|
|
|
|
if(knifeedge==1){
|
|
diffloss = ked(LR.frq_mhz,elev,destination.alt*METERS_PER_FOOT,dkm);
|
|
loss+=(diffloss); // ;)
|
|
}
|
|
|
|
if(debug){
|
|
fprintf(stdout,"\n%2f\t%2f\t%2f\t%2f",txelev,path.elevation[y],dkm,loss);
|
|
fflush(stdout);
|
|
}
|
|
|
|
|
|
//Key stage. Link dB for p2p is returned as 'loss'.
|
|
|
|
temp.lat=path.lat[y];
|
|
temp.lon=path.lon[y];
|
|
|
|
azimuth=(Azimuth(source,temp));
|
|
|
|
if (fd!=NULL)
|
|
fprintf(fd,"%.7f, %.7f, %.3f, %.3f, ",path.lat[y], path.lon[y], azimuth, elevation);
|
|
|
|
/* If ERP==0, write path loss to alphanumeric
|
|
output file. Otherwise, write field strength
|
|
or received power level (below), as appropriate. */
|
|
|
|
if (fd!=NULL && LR.erp==0.0)
|
|
fprintf(fd,"%.2f",loss);
|
|
|
|
/* Integrate the antenna's radiation
|
|
pattern into the overall path loss. */
|
|
|
|
x=(int)rint(10.0*(10.0-elevation));
|
|
|
|
if (x>=0 && x<=1000)
|
|
{
|
|
azimuth=rint(azimuth);
|
|
|
|
pattern=(double)LR.antenna_pattern[(int)azimuth][x];
|
|
|
|
if (pattern!=0.0)
|
|
{
|
|
pattern=20.0*log10(pattern);
|
|
loss-=pattern;
|
|
}
|
|
}
|
|
|
|
if (LR.erp!=0.0)
|
|
{
|
|
if (dbm)
|
|
{
|
|
/* dBm is based on EIRP (ERP + 2.14) */
|
|
|
|
rxp=LR.erp/(pow(10.0,(loss-2.14)/10.0));
|
|
|
|
dBm=10.0*(log10(rxp*1000.0));
|
|
|
|
if (fd!=NULL)
|
|
fprintf(fd,"%.3f",dBm);
|
|
|
|
/* Scale roughly between 0 and 255 */
|
|
|
|
ifs=200+(int)rint(dBm);
|
|
|
|
if (ifs<0)
|
|
ifs=0;
|
|
|
|
if (ifs>255)
|
|
ifs=255;
|
|
|
|
ofs=GetSignal(path.lat[y],path.lon[y]);
|
|
|
|
if (ofs>ifs)
|
|
ifs=ofs;
|
|
|
|
PutSignal(path.lat[y],path.lon[y],(unsigned char)ifs);
|
|
}
|
|
|
|
else
|
|
{
|
|
field_strength=(139.4+(20.0*log10(LR.frq_mhz))-loss)+(10.0*log10(LR.erp/1000.0));
|
|
|
|
ifs=100+(int)rint(field_strength);
|
|
|
|
if (ifs<0)
|
|
ifs=0;
|
|
|
|
if (ifs>255)
|
|
ifs=255;
|
|
|
|
ofs=GetSignal(path.lat[y],path.lon[y]);
|
|
|
|
if (ofs>ifs)
|
|
ifs=ofs;
|
|
|
|
PutSignal(path.lat[y],path.lon[y],(unsigned char)ifs);
|
|
|
|
if (fd!=NULL)
|
|
fprintf(fd,"%.3f",field_strength);
|
|
}
|
|
}
|
|
|
|
else
|
|
{
|
|
if (loss>255)
|
|
ifs=255;
|
|
else
|
|
ifs=(int)rint(loss);
|
|
|
|
ofs=GetSignal(path.lat[y],path.lon[y]);
|
|
|
|
if (ofs<ifs && ofs!=0)
|
|
ifs=ofs;
|
|
|
|
PutSignal(path.lat[y],path.lon[y],(unsigned char)ifs);
|
|
}
|
|
|
|
if (fd!=NULL)
|
|
{
|
|
if (block)
|
|
fprintf(fd," *");
|
|
|
|
fprintf(fd,"\n");
|
|
}
|
|
|
|
/* Mark this point as having been analyzed */
|
|
|
|
PutMask(path.lat[y],path.lon[y],(GetMask(path.lat[y],path.lon[y])&7)+(mask_value<<3));
|
|
}
|
|
}
|
|
}
|
|
|
|
void PlotLOSMap(struct site source, double altitude, char *plo_filename)
|
|
{
|
|
/* This function performs a 360 degree sweep around the
|
|
transmitter site (source location), and plots the
|
|
line-of-sight coverage of the transmitter on the ss
|
|
generated topographic map based on a receiver located
|
|
at the specified altitude (in feet AGL). Results
|
|
are stored in memory, and written out in the form
|
|
of a topographic map when the WritePPM() function
|
|
is later invoked. */
|
|
|
|
int y, z;
|
|
struct site edge;
|
|
unsigned char x;
|
|
double lat, lon, minwest, maxnorth, th;
|
|
static unsigned char mask_value=1;
|
|
FILE *fd=NULL;
|
|
|
|
if (plo_filename[0]!=0)
|
|
fd=fopen(plo_filename,"wb");
|
|
|
|
if (fd!=NULL)
|
|
{
|
|
fprintf(fd,"%d, %d\t; max_west, min_west\n%d, %d\t; max_north, min_north\n",max_west, min_west, max_north, min_north);
|
|
}
|
|
|
|
th=ppd/loops;
|
|
|
|
z=(int)(th*ReduceAngle(max_west-min_west));
|
|
|
|
minwest=dpp+(double)min_west;
|
|
maxnorth=(double)max_north-dpp;
|
|
|
|
|
|
for (lon=minwest, x=0, y=0; (LonDiff(lon,(double)max_west)<=0.0); y++, lon=minwest+(dpp*(double)y))
|
|
{
|
|
if (lon>=360.0)
|
|
lon-=360.0;
|
|
|
|
edge.lat=max_north;
|
|
edge.lon=lon;
|
|
edge.alt=altitude;
|
|
|
|
PlotLOSPath(source,edge,mask_value,fd);
|
|
}
|
|
|
|
|
|
|
|
z=(int)(th*(double)(max_north-min_north));
|
|
|
|
for (lat=maxnorth, x=0, y=0; lat>=(double)min_north; y++, lat=maxnorth-(dpp*(double)y))
|
|
{
|
|
edge.lat=lat;
|
|
edge.lon=min_west;
|
|
edge.alt=altitude;
|
|
|
|
PlotLOSPath(source,edge,mask_value,fd);
|
|
|
|
}
|
|
|
|
|
|
|
|
z=(int)(th*ReduceAngle(max_west-min_west));
|
|
|
|
for (lon=minwest, x=0, y=0; (LonDiff(lon,(double)max_west)<=0.0); y++, lon=minwest+(dpp*(double)y))
|
|
{
|
|
if (lon>=360.0)
|
|
lon-=360.0;
|
|
|
|
edge.lat=min_north;
|
|
edge.lon=lon;
|
|
edge.alt=altitude;
|
|
|
|
PlotLOSPath(source,edge,mask_value,fd);
|
|
|
|
}
|
|
|
|
|
|
z=(int)(th*(double)(max_north-min_north));
|
|
|
|
for (lat=(double)min_north, x=0, y=0; lat<(double)max_north; y++, lat=(double)min_north+(dpp*(double)y))
|
|
{
|
|
edge.lat=lat;
|
|
edge.lon=max_west;
|
|
edge.alt=altitude;
|
|
|
|
PlotLOSPath(source,edge,mask_value,fd);
|
|
|
|
|
|
}
|
|
|
|
|
|
switch (mask_value)
|
|
{
|
|
case 1:
|
|
mask_value=8;
|
|
break;
|
|
|
|
case 8:
|
|
mask_value=16;
|
|
break;
|
|
|
|
case 16:
|
|
mask_value=32;
|
|
}
|
|
}
|
|
|
|
void PlotPropagation(struct site source, double altitude, char *plo_filename, int propmodel, int knifeedge)
|
|
{
|
|
int y, z, count;
|
|
struct site edge;
|
|
double lat, lon, minwest, maxnorth, th;
|
|
unsigned char x;
|
|
static unsigned char mask_value=1;
|
|
FILE *fd=NULL;
|
|
|
|
minwest=dpp+(double)min_west;
|
|
maxnorth=(double)max_north-dpp;
|
|
|
|
count=0;
|
|
|
|
|
|
if (LR.erp==0.0 && debug)
|
|
fprintf(stdout,"path loss");
|
|
else
|
|
{
|
|
if(debug){
|
|
if (dbm)
|
|
fprintf(stdout,"signal power level");
|
|
else
|
|
fprintf(stdout,"field strength");
|
|
}
|
|
}
|
|
if (debug){
|
|
fprintf(stdout," contours of \"%s\"\nout to a radius of %.2f %s with Rx antenna(s) at %.2f %s AGL\n",source.name,metric?max_range*KM_PER_MILE:max_range,metric?"kilometers":"miles",metric?altitude*METERS_PER_FOOT:altitude,metric?"meters":"feet");
|
|
}
|
|
|
|
if (clutter>0.0 && debug)
|
|
fprintf(stdout,"\nand %.2f %s of ground clutter",metric?clutter*METERS_PER_FOOT:clutter,metric?"meters":"feet");
|
|
if(debug){
|
|
fprintf(stdout,"...\n\n 0%c to 25%c ",37,37);
|
|
fflush(stdout);
|
|
}
|
|
if (plo_filename[0]!=0)
|
|
fd=fopen(plo_filename,"wb");
|
|
|
|
if (fd!=NULL)
|
|
{
|
|
fprintf(fd,"%d, %d\t; max_west, min_west\n%d, %d\t; max_north, min_north\n",max_west, min_west, max_north, min_north);
|
|
}
|
|
|
|
th=ppd/loops;
|
|
|
|
z=(int)(th*ReduceAngle(max_west-min_west));
|
|
|
|
for (lon=minwest, x=0, y=0; (LonDiff(lon,(double)max_west)<=0.0); y++, lon=minwest+(dpp*(double)y))
|
|
{
|
|
if (lon>=360.0)
|
|
lon-=360.0;
|
|
|
|
edge.lat=max_north;
|
|
edge.lon=lon;
|
|
edge.alt=altitude;
|
|
|
|
PlotPropPath(source,edge,mask_value,fd,propmodel,knifeedge);
|
|
count++;
|
|
|
|
if (count==z)
|
|
{
|
|
count=0;
|
|
|
|
if (x==3)
|
|
x=0;
|
|
else
|
|
x++;
|
|
}
|
|
}
|
|
|
|
count=0;
|
|
if(debug){
|
|
fprintf(stdout,"\n25%c to 50%c ",37,37);
|
|
fflush(stdout);
|
|
}
|
|
z=(int)(th*(double)(max_north-min_north));
|
|
|
|
for (lat=maxnorth, x=0, y=0; lat>=(double)min_north; y++, lat=maxnorth-(dpp*(double)y))
|
|
{
|
|
edge.lat=lat;
|
|
edge.lon=min_west;
|
|
edge.alt=altitude;
|
|
|
|
PlotPropPath(source,edge,mask_value,fd,propmodel,knifeedge);
|
|
count++;
|
|
|
|
if (count==z)
|
|
{
|
|
//fprintf(stdout,"%c",symbol[x]);
|
|
//fflush(stdout);
|
|
count=0;
|
|
|
|
if (x==3)
|
|
x=0;
|
|
else
|
|
x++;
|
|
}
|
|
}
|
|
|
|
count=0;
|
|
if(debug){
|
|
fprintf(stdout,"\n50%c to 75%c ",37,37);
|
|
fflush(stdout);
|
|
}
|
|
z=(int)(th*ReduceAngle(max_west-min_west));
|
|
|
|
for (lon=minwest, x=0, y=0; (LonDiff(lon,(double)max_west)<=0.0); y++, lon=minwest+(dpp*(double)y))
|
|
{
|
|
if (lon>=360.0)
|
|
lon-=360.0;
|
|
|
|
edge.lat=min_north;
|
|
edge.lon=lon;
|
|
edge.alt=altitude;
|
|
|
|
PlotPropPath(source,edge,mask_value,fd,propmodel,knifeedge);
|
|
count++;
|
|
if (count==z)
|
|
{
|
|
//fprintf(stdout,"%c",symbol[x]);
|
|
//fflush(stdout);
|
|
count=0;
|
|
|
|
if (x==3)
|
|
x=0;
|
|
else
|
|
x++;
|
|
}
|
|
|
|
}
|
|
|
|
count=0;
|
|
if(debug){
|
|
fprintf(stdout,"\n75%c to 100%c ",37,37);
|
|
fflush(stdout);
|
|
}
|
|
z=(int)(th*(double)(max_north-min_north));
|
|
|
|
for (lat=(double)min_north, x=0, y=0; lat<(double)max_north; y++, lat=(double)min_north+(dpp*(double)y))
|
|
{
|
|
edge.lat=lat;
|
|
edge.lon=max_west;
|
|
edge.alt=altitude;
|
|
|
|
PlotPropPath(source,edge,mask_value,fd,propmodel,knifeedge);
|
|
count++;
|
|
|
|
if (count==z)
|
|
{
|
|
|
|
count=0;
|
|
|
|
if (x==3)
|
|
x=0;
|
|
else
|
|
x++;
|
|
}
|
|
}
|
|
|
|
if (fd!=NULL)
|
|
fclose(fd);
|
|
|
|
|
|
if (mask_value<30)
|
|
mask_value++;
|
|
}
|
|
|
|
void LoadSignalColors(struct site xmtr)
|
|
{
|
|
int x, y, ok, val[4];
|
|
char filename[255], string[80], *pointer=NULL, *s=NULL;
|
|
FILE *fd=NULL;
|
|
|
|
for (x=0; xmtr.filename[x]!='.' && xmtr.filename[x]!=0 && x<250; x++)
|
|
filename[x]=xmtr.filename[x];
|
|
|
|
filename[x]='.';
|
|
filename[x+1]='s';
|
|
filename[x+2]='c';
|
|
filename[x+3]='f';
|
|
filename[x+4]=0;
|
|
|
|
/* Default values */
|
|
|
|
region.level[0]=128;
|
|
region.color[0][0]=255;
|
|
region.color[0][1]=0;
|
|
region.color[0][2]=0;
|
|
|
|
region.level[1]=118;
|
|
region.color[1][0]=255;
|
|
region.color[1][1]=165;
|
|
region.color[1][2]=0;
|
|
|
|
region.level[2]=108;
|
|
region.color[2][0]=255;
|
|
region.color[2][1]=206;
|
|
region.color[2][2]=0;
|
|
|
|
region.level[3]=98;
|
|
region.color[3][0]=255;
|
|
region.color[3][1]=255;
|
|
region.color[3][2]=0;
|
|
|
|
region.level[4]=88;
|
|
region.color[4][0]=184;
|
|
region.color[4][1]=255;
|
|
region.color[4][2]=0;
|
|
|
|
region.level[5]=78;
|
|
region.color[5][0]=0;
|
|
region.color[5][1]=255;
|
|
region.color[5][2]=0;
|
|
|
|
region.level[6]=68;
|
|
region.color[6][0]=0;
|
|
region.color[6][1]=208;
|
|
region.color[6][2]=0;
|
|
|
|
region.level[7]=58;
|
|
region.color[7][0]=0;
|
|
region.color[7][1]=196;
|
|
region.color[7][2]=196;
|
|
|
|
region.level[8]=48;
|
|
region.color[8][0]=0;
|
|
region.color[8][1]=148;
|
|
region.color[8][2]=255;
|
|
|
|
region.level[9]=38;
|
|
region.color[9][0]=80;
|
|
region.color[9][1]=80;
|
|
region.color[9][2]=255;
|
|
|
|
region.level[10]=28;
|
|
region.color[10][0]=0;
|
|
region.color[10][1]=38;
|
|
region.color[10][2]=255;
|
|
|
|
region.level[11]=18;
|
|
region.color[11][0]=142;
|
|
region.color[11][1]=63;
|
|
region.color[11][2]=255;
|
|
|
|
region.level[12]=8;
|
|
region.color[12][0]=140;
|
|
region.color[12][1]=0;
|
|
region.color[12][2]=128;
|
|
|
|
region.levels=13;
|
|
|
|
fd=fopen(filename,"r");
|
|
|
|
if (fd==NULL)
|
|
fd=fopen(filename,"r");
|
|
|
|
if (fd==NULL)
|
|
{
|
|
fd=fopen(filename,"w");
|
|
|
|
|
|
for (x=0; x<region.levels; x++)
|
|
fprintf(fd,"%3d: %3d, %3d, %3d\n",region.level[x], region.color[x][0], region.color[x][1], region.color[x][2]);
|
|
|
|
fclose(fd);
|
|
}
|
|
|
|
else
|
|
{
|
|
x=0;
|
|
s=fgets(string,80,fd);
|
|
|
|
while (x<128 && feof(fd)==0)
|
|
{
|
|
pointer=strchr(string,';');
|
|
|
|
if (pointer!=NULL)
|
|
*pointer=0;
|
|
|
|
ok=sscanf(string,"%d: %d, %d, %d", &val[0], &val[1], &val[2], &val[3]);
|
|
|
|
if (ok==4)
|
|
{
|
|
for (y=0; y<4; y++)
|
|
{
|
|
if (val[y]>255)
|
|
val[y]=255;
|
|
|
|
if (val[y]<0)
|
|
val[y]=0;
|
|
}
|
|
|
|
region.level[x]=val[0];
|
|
region.color[x][0]=val[1];
|
|
region.color[x][1]=val[2];
|
|
region.color[x][2]=val[3];
|
|
x++;
|
|
}
|
|
|
|
s=fgets(string,80,fd);
|
|
}
|
|
|
|
fclose(fd);
|
|
region.levels=x;
|
|
}
|
|
}
|
|
|
|
void LoadLossColors(struct site xmtr)
|
|
{
|
|
int x, y, ok, val[4];
|
|
char filename[255], string[80], *pointer=NULL, *s=NULL;
|
|
FILE *fd=NULL;
|
|
|
|
for (x=0; xmtr.filename[x]!='.' && xmtr.filename[x]!=0 && x<250; x++)
|
|
filename[x]=xmtr.filename[x];
|
|
|
|
filename[x]='.';
|
|
filename[x+1]='l';
|
|
filename[x+2]='c';
|
|
filename[x+3]='f';
|
|
filename[x+4]=0;
|
|
|
|
/* Default values */
|
|
|
|
region.level[0]=80;
|
|
region.color[0][0]=255;
|
|
region.color[0][1]=0;
|
|
region.color[0][2]=0;
|
|
|
|
region.level[1]=90;
|
|
region.color[1][0]=255;
|
|
region.color[1][1]=128;
|
|
region.color[1][2]=0;
|
|
|
|
region.level[2]=100;
|
|
region.color[2][0]=255;
|
|
region.color[2][1]=165;
|
|
region.color[2][2]=0;
|
|
|
|
region.level[3]=110;
|
|
region.color[3][0]=255;
|
|
region.color[3][1]=206;
|
|
region.color[3][2]=0;
|
|
|
|
region.level[4]=120;
|
|
region.color[4][0]=255;
|
|
region.color[4][1]=255;
|
|
region.color[4][2]=0;
|
|
|
|
region.level[5]=130;
|
|
region.color[5][0]=184;
|
|
region.color[5][1]=255;
|
|
region.color[5][2]=0;
|
|
|
|
region.level[6]=140;
|
|
region.color[6][0]=0;
|
|
region.color[6][1]=255;
|
|
region.color[6][2]=0;
|
|
|
|
region.level[7]=150;
|
|
region.color[7][0]=0;
|
|
region.color[7][1]=208;
|
|
region.color[7][2]=0;
|
|
|
|
region.level[8]=160;
|
|
region.color[8][0]=0;
|
|
region.color[8][1]=196;
|
|
region.color[8][2]=196;
|
|
|
|
region.level[9]=170;
|
|
region.color[9][0]=0;
|
|
region.color[9][1]=148;
|
|
region.color[9][2]=255;
|
|
|
|
region.level[10]=180;
|
|
region.color[10][0]=80;
|
|
region.color[10][1]=80;
|
|
region.color[10][2]=255;
|
|
|
|
region.level[11]=190;
|
|
region.color[11][0]=0;
|
|
region.color[11][1]=38;
|
|
region.color[11][2]=255;
|
|
|
|
region.level[12]=200;
|
|
region.color[12][0]=142;
|
|
region.color[12][1]=63;
|
|
region.color[12][2]=255;
|
|
|
|
region.level[13]=210;
|
|
region.color[13][0]=196;
|
|
region.color[13][1]=54;
|
|
region.color[13][2]=255;
|
|
|
|
region.level[14]=220;
|
|
region.color[14][0]=255;
|
|
region.color[14][1]=0;
|
|
region.color[14][2]=255;
|
|
|
|
region.level[15]=230;
|
|
region.color[15][0]=255;
|
|
region.color[15][1]=194;
|
|
region.color[15][2]=204;
|
|
|
|
region.levels=16;
|
|
|
|
fd=fopen(filename,"r");
|
|
|
|
if (fd==NULL)
|
|
fd=fopen(filename,"r");
|
|
|
|
if (fd==NULL)
|
|
{
|
|
fd=fopen(filename,"w");
|
|
|
|
|
|
|
|
for (x=0; x<region.levels; x++)
|
|
fprintf(fd,"%3d: %3d, %3d, %3d\n",region.level[x], region.color[x][0], region.color[x][1], region.color[x][2]);
|
|
|
|
fclose(fd);
|
|
}
|
|
|
|
else
|
|
{
|
|
x=0;
|
|
s=fgets(string,80,fd);
|
|
|
|
while (x<128 && feof(fd)==0)
|
|
{
|
|
pointer=strchr(string,';');
|
|
|
|
if (pointer!=NULL)
|
|
*pointer=0;
|
|
|
|
ok=sscanf(string,"%d: %d, %d, %d", &val[0], &val[1], &val[2], &val[3]);
|
|
|
|
if (ok==4)
|
|
{
|
|
for (y=0; y<4; y++)
|
|
{
|
|
if (val[y]>255)
|
|
val[y]=255;
|
|
|
|
if (val[y]<0)
|
|
val[y]=0;
|
|
}
|
|
|
|
region.level[x]=val[0];
|
|
region.color[x][0]=val[1];
|
|
region.color[x][1]=val[2];
|
|
region.color[x][2]=val[3];
|
|
x++;
|
|
}
|
|
|
|
s=fgets(string,80,fd);
|
|
}
|
|
|
|
fclose(fd);
|
|
region.levels=x;
|
|
}
|
|
}
|
|
|
|
void LoadDBMColors(struct site xmtr)
|
|
{
|
|
int x, y, ok, val[4];
|
|
char filename[255], string[80], *pointer=NULL, *s=NULL;
|
|
FILE *fd=NULL;
|
|
|
|
for (x=0; xmtr.filename[x]!='.' && xmtr.filename[x]!=0 && x<250; x++)
|
|
filename[x]=xmtr.filename[x];
|
|
|
|
filename[x]='.';
|
|
filename[x+1]='d';
|
|
filename[x+2]='c';
|
|
filename[x+3]='f';
|
|
filename[x+4]=0;
|
|
|
|
/* Default values */
|
|
|
|
region.level[0]=0;
|
|
region.color[0][0]=255;
|
|
region.color[0][1]=0;
|
|
region.color[0][2]=0;
|
|
|
|
region.level[1]=-10;
|
|
region.color[1][0]=255;
|
|
region.color[1][1]=128;
|
|
region.color[1][2]=0;
|
|
|
|
region.level[2]=-20;
|
|
region.color[2][0]=255;
|
|
region.color[2][1]=165;
|
|
region.color[2][2]=0;
|
|
|
|
region.level[3]=-30;
|
|
region.color[3][0]=255;
|
|
region.color[3][1]=206;
|
|
region.color[3][2]=0;
|
|
|
|
region.level[4]=-40;
|
|
region.color[4][0]=255;
|
|
region.color[4][1]=255;
|
|
region.color[4][2]=0;
|
|
|
|
region.level[5]=-50;
|
|
region.color[5][0]=184;
|
|
region.color[5][1]=255;
|
|
region.color[5][2]=0;
|
|
|
|
region.level[6]=-60;
|
|
region.color[6][0]=0;
|
|
region.color[6][1]=255;
|
|
region.color[6][2]=0;
|
|
|
|
region.level[7]=-70;
|
|
region.color[7][0]=0;
|
|
region.color[7][1]=208;
|
|
region.color[7][2]=0;
|
|
|
|
region.level[8]=-80;
|
|
region.color[8][0]=0;
|
|
region.color[8][1]=196;
|
|
region.color[8][2]=196;
|
|
|
|
region.level[9]=-90;
|
|
region.color[9][0]=0;
|
|
region.color[9][1]=148;
|
|
region.color[9][2]=255;
|
|
|
|
region.level[10]=-100;
|
|
region.color[10][0]=80;
|
|
region.color[10][1]=80;
|
|
region.color[10][2]=255;
|
|
|
|
region.level[11]=-110;
|
|
region.color[11][0]=0;
|
|
region.color[11][1]=38;
|
|
region.color[11][2]=255;
|
|
|
|
region.level[12]=-120;
|
|
region.color[12][0]=142;
|
|
region.color[12][1]=63;
|
|
region.color[12][2]=255;
|
|
|
|
region.level[13]=-130;
|
|
region.color[13][0]=196;
|
|
region.color[13][1]=54;
|
|
region.color[13][2]=255;
|
|
|
|
region.level[14]=-140;
|
|
region.color[14][0]=255;
|
|
region.color[14][1]=0;
|
|
region.color[14][2]=255;
|
|
|
|
region.level[15]=-150;
|
|
region.color[15][0]=255;
|
|
region.color[15][1]=194;
|
|
region.color[15][2]=204;
|
|
|
|
region.levels=16;
|
|
|
|
fd=fopen(filename,"r");
|
|
|
|
if (fd==NULL)
|
|
fd=fopen(filename,"r");
|
|
|
|
if (fd==NULL)
|
|
{
|
|
fd=fopen(filename,"w");
|
|
|
|
|
|
for (x=0; x<region.levels; x++)
|
|
fprintf(fd,"%+4d: %3d, %3d, %3d\n",region.level[x], region.color[x][0], region.color[x][1], region.color[x][2]);
|
|
|
|
fclose(fd);
|
|
}
|
|
|
|
else
|
|
{
|
|
x=0;
|
|
s=fgets(string,80,fd);
|
|
|
|
while (x<128 && feof(fd)==0)
|
|
{
|
|
pointer=strchr(string,';');
|
|
|
|
if (pointer!=NULL)
|
|
*pointer=0;
|
|
|
|
ok=sscanf(string,"%d: %d, %d, %d", &val[0], &val[1], &val[2], &val[3]);
|
|
|
|
if (ok==4)
|
|
{
|
|
if (val[0]<-200)
|
|
val[0]=-200;
|
|
|
|
if (val[0]>+40)
|
|
val[0]=+40;
|
|
|
|
region.level[x]=val[0];
|
|
|
|
for (y=1; y<4; y++)
|
|
{
|
|
if (val[y]>255)
|
|
val[y]=255;
|
|
|
|
if (val[y]<0)
|
|
val[y]=0;
|
|
}
|
|
|
|
region.color[x][0]=val[1];
|
|
region.color[x][1]=val[2];
|
|
region.color[x][2]=val[3];
|
|
x++;
|
|
}
|
|
|
|
s=fgets(string,80,fd);
|
|
}
|
|
|
|
fclose(fd);
|
|
region.levels=x;
|
|
}
|
|
}
|
|
|
|
|
|
void DoPathLoss(char *filename, unsigned char geo, unsigned char kml, unsigned char ngs, struct site *xmtr, unsigned char txsites)
|
|
{
|
|
/* This function generates a topographic map in Portable Pix Map
|
|
(PPM) format based on the content of flags held in the mask[][]
|
|
array (only). The image created is rotated counter-clockwise
|
|
90 degrees from its representation in dem[][] so that north
|
|
points up and east points right in the image generated. */
|
|
|
|
char mapfile[255], geofile[255], kmlfile[255];
|
|
unsigned width, height, red, green, blue, terrain=0;
|
|
unsigned char found, mask, cityorcounty;
|
|
int indx, x, y, z, x0, y0, loss, match;
|
|
double lat, lon, conversion, one_over_gamma,minwest;
|
|
FILE *fd;
|
|
|
|
one_over_gamma=1.0/GAMMA;
|
|
conversion=255.0/pow((double)(max_elevation-min_elevation),one_over_gamma);
|
|
|
|
width=(unsigned)(ippd*ReduceAngle(max_west-min_west));
|
|
height=(unsigned)(ippd*ReduceAngle(max_north-min_north));
|
|
|
|
LoadLossColors(xmtr[0]);
|
|
|
|
if (filename[0]==0)
|
|
{
|
|
strncpy(filename, xmtr[0].filename,254);
|
|
filename[strlen(filename)-4]=0; /* Remove .qth */
|
|
}
|
|
|
|
y=strlen(filename);
|
|
|
|
if (y>4)
|
|
{
|
|
if (filename[y-1]=='m' && filename[y-2]=='p' && filename[y-3]=='p' && filename[y-4]=='.')
|
|
y-=4;
|
|
}
|
|
|
|
for (x=0; x<y; x++)
|
|
{
|
|
mapfile[x]=filename[x];
|
|
geofile[x]=filename[x];
|
|
kmlfile[x]=filename[x];
|
|
}
|
|
|
|
mapfile[x]='.';
|
|
geofile[x]='.';
|
|
kmlfile[x]='.';
|
|
mapfile[x+1]='p';
|
|
geofile[x+1]='g';
|
|
kmlfile[x+1]='k';
|
|
mapfile[x+2]='p';
|
|
geofile[x+2]='e';
|
|
kmlfile[x+2]='m';
|
|
mapfile[x+3]='m';
|
|
geofile[x+3]='o';
|
|
kmlfile[x+3]='l';
|
|
mapfile[x+4]=0;
|
|
geofile[x+4]=0;
|
|
kmlfile[x+4]=0;
|
|
|
|
minwest=((double)min_west)+dpp;
|
|
|
|
if (minwest>360.0)
|
|
minwest-=360.0;
|
|
|
|
north=(double)max_north-dpp;
|
|
|
|
if (kml || geo)
|
|
south=(double)min_north; /* No bottom legend */
|
|
else
|
|
south=(double)min_north-(30.0/ppd); /* 30 pixels for bottom legend */
|
|
|
|
east=(minwest<180.0?-minwest:360.0-min_west);
|
|
west=(double)(max_west<180?-max_west:360-max_west);
|
|
|
|
|
|
// WriteKML()
|
|
//writeKML(xmtr,filename);
|
|
|
|
fd=fopen(mapfile,"wb");
|
|
|
|
fprintf(fd,"P6\n%u %u\n255\n",width,(kml?height:height+30));
|
|
if(debug){
|
|
fprintf(stdout,"\nWriting \"%s\" (%ux%u pixmap image)... ",mapfile,width,(kml?height:height+30));
|
|
fflush(stdout);
|
|
}
|
|
for (y=0, lat=north; y<(int)height; y++, lat=north-(dpp*(double)y))
|
|
{
|
|
for (x=0, lon=max_west; x<(int)width; x++, lon=max_west-(dpp*(double)x))
|
|
{
|
|
if (lon<0.0)
|
|
lon+=360.0;
|
|
|
|
for (indx=0, found=0; indx<MAXPAGES && found==0;)
|
|
{
|
|
x0=(int)rint(ppd*(lat-(double)dem[indx].min_north));
|
|
y0=mpi-(int)rint(ppd*(LonDiff((double)dem[indx].max_west,lon)));
|
|
|
|
if (x0>=0 && x0<=mpi && y0>=0 && y0<=mpi)
|
|
found=1;
|
|
else
|
|
indx++;
|
|
}
|
|
|
|
|
|
|
|
if (found)
|
|
{
|
|
mask=dem[indx].mask[x0][y0];
|
|
loss=(dem[indx].signal[x0][y0]);
|
|
cityorcounty=0;
|
|
|
|
match=255;
|
|
|
|
red=0;
|
|
green=0;
|
|
blue=0;
|
|
|
|
if (loss<=region.level[0])
|
|
match=0;
|
|
else
|
|
{
|
|
for (z=1; (z<region.levels && match==255); z++)
|
|
{
|
|
if (loss>=region.level[z-1] && loss<region.level[z])
|
|
match=z;
|
|
}
|
|
}
|
|
|
|
if (match<region.levels)
|
|
{
|
|
red=region.color[match][0];
|
|
green=region.color[match][1];
|
|
blue=region.color[match][2];
|
|
}
|
|
|
|
if (mask&2)
|
|
{
|
|
/* Text Labels: Red or otherwise */
|
|
|
|
if (red>=180 && green<=75 && blue<=75 && loss==0)
|
|
fprintf(fd,"%c%c%c",255^red,255^green,255^blue);
|
|
else
|
|
fprintf(fd,"%c%c%c",255,0,0);
|
|
|
|
cityorcounty=1;
|
|
}
|
|
|
|
else if (mask&4)
|
|
{
|
|
/* County Boundaries: Black */
|
|
|
|
fprintf(fd,"%c%c%c",0,0,0);
|
|
|
|
cityorcounty=1;
|
|
}
|
|
|
|
if (cityorcounty==0)
|
|
{
|
|
if (loss==0 || (contour_threshold!=0 && loss>abs(contour_threshold)))
|
|
{
|
|
if (ngs) /* No terrain */
|
|
fprintf(fd,"%c%c%c",255,255,255);
|
|
else
|
|
{
|
|
/* Display land or sea elevation */
|
|
|
|
if (dem[indx].data[x0][y0]==0)
|
|
fprintf(fd,"%c%c%c",0,0,170);
|
|
else
|
|
{
|
|
terrain=(unsigned)(0.5+pow((double)(dem[indx].data[x0][y0]-min_elevation),one_over_gamma)*conversion);
|
|
fprintf(fd,"%c%c%c",terrain,terrain,terrain);
|
|
}
|
|
}
|
|
}
|
|
|
|
else
|
|
{
|
|
/* Plot path loss in color */
|
|
|
|
if (red!=0 || green!=0 || blue!=0)
|
|
fprintf(fd,"%c%c%c",red,green,blue);
|
|
|
|
else /* terrain / sea-level */
|
|
{
|
|
if (dem[indx].data[x0][y0]==0)
|
|
fprintf(fd,"%c%c%c",0,0,170);
|
|
else
|
|
{
|
|
/* Elevation: Greyscale */
|
|
terrain=(unsigned)(0.5+pow((double)(dem[indx].data[x0][y0]-min_elevation),one_over_gamma)*conversion);
|
|
fprintf(fd,"%c%c%c",terrain,terrain,terrain);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
else
|
|
{
|
|
/* We should never get here, but if */
|
|
/* we do, display the region as black */
|
|
|
|
fprintf(fd,"%c%c%c",0,0,0);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
fclose(fd);
|
|
|
|
}
|
|
|
|
void DoSigStr(char *filename, unsigned char geo, unsigned char kml, unsigned char ngs, struct site *xmtr, unsigned char txsites)
|
|
{
|
|
/* This function generates a topographic map in Portable Pix Map
|
|
(PPM) format based on the signal strength values held in the
|
|
signal[][] array. The image created is rotated counter-clockwise
|
|
90 degrees from its representation in dem[][] so that north
|
|
points up and east points right in the image generated. */
|
|
|
|
char mapfile[255], geofile[255], kmlfile[255];
|
|
unsigned width, height, terrain, red, green, blue;
|
|
unsigned char found, mask, cityorcounty;
|
|
int indx, x, y, z=1, x0, y0, signal,match;
|
|
double conversion, one_over_gamma, lat, lon, minwest;
|
|
FILE *fd;
|
|
|
|
one_over_gamma=1.0/GAMMA;
|
|
conversion=255.0/pow((double)(max_elevation-min_elevation),one_over_gamma);
|
|
|
|
width=(unsigned)(ippd*ReduceAngle(max_west-min_west));
|
|
height=(unsigned)(ippd*ReduceAngle(max_north-min_north));
|
|
|
|
LoadSignalColors(xmtr[0]);
|
|
|
|
if (filename[0]==0)
|
|
{
|
|
strncpy(filename, xmtr[0].filename,254);
|
|
filename[strlen(filename)-4]=0; /* Remove .qth */
|
|
}
|
|
|
|
y=strlen(filename);
|
|
|
|
if (y>4)
|
|
{
|
|
if (filename[y-1]=='m' && filename[y-2]=='p' && filename[y-3]=='p' && filename[y-4]=='.')
|
|
y-=4;
|
|
}
|
|
|
|
for (x=0; x<y; x++)
|
|
{
|
|
mapfile[x]=filename[x];
|
|
geofile[x]=filename[x];
|
|
kmlfile[x]=filename[x];
|
|
}
|
|
|
|
mapfile[x]='.';
|
|
geofile[x]='.';
|
|
kmlfile[x]='.';
|
|
mapfile[x+1]='p';
|
|
geofile[x+1]='g';
|
|
kmlfile[x+1]='k';
|
|
mapfile[x+2]='p';
|
|
geofile[x+2]='e';
|
|
kmlfile[x+2]='m';
|
|
mapfile[x+3]='m';
|
|
geofile[x+3]='o';
|
|
kmlfile[x+3]='l';
|
|
mapfile[x+4]=0;
|
|
geofile[x+4]=0;
|
|
kmlfile[x+4]=0;
|
|
|
|
minwest=((double)min_west)+dpp;
|
|
|
|
if (minwest>360.0)
|
|
minwest-=360.0;
|
|
|
|
north=(double)max_north-dpp;
|
|
|
|
|
|
south=(double)min_north; /* No bottom legend */
|
|
|
|
east=(minwest<180.0?-minwest:360.0-min_west);
|
|
west=(double)(max_west<180?-max_west:360-max_west);
|
|
|
|
// WriteKML()
|
|
//writeKML(xmtr,filename);
|
|
|
|
fd=fopen(mapfile,"wb");
|
|
|
|
fprintf(fd,"P6\n%u %u\n255\n",width,(kml?height:height+30));
|
|
if(debug){
|
|
fprintf(stdout,"\nWriting \"%s\" (%ux%u pixmap image)... ",mapfile,width,(kml?height:height+30));
|
|
fflush(stdout);
|
|
}
|
|
for (y=0, lat=north; y<(int)height; y++, lat=north-(dpp*(double)y))
|
|
{
|
|
for (x=0, lon=max_west; x<(int)width; x++, lon=max_west-(dpp*(double)x))
|
|
{
|
|
if (lon<0.0)
|
|
lon+=360.0;
|
|
|
|
for (indx=0, found=0; indx<MAXPAGES && found==0;)
|
|
{
|
|
x0=(int)rint(ppd*(lat-(double)dem[indx].min_north));
|
|
y0=mpi-(int)rint(ppd*(LonDiff((double)dem[indx].max_west,lon)));
|
|
|
|
if (x0>=0 && x0<=mpi && y0>=0 && y0<=mpi)
|
|
found=1;
|
|
else
|
|
indx++;
|
|
}
|
|
|
|
if (found)
|
|
{
|
|
mask=dem[indx].mask[x0][y0];
|
|
signal=(dem[indx].signal[x0][y0])-100;
|
|
cityorcounty=0;
|
|
|
|
match=255;
|
|
|
|
red=0;
|
|
green=0;
|
|
blue=0;
|
|
|
|
if (signal>=region.level[0])
|
|
match=0;
|
|
else
|
|
{
|
|
for (z=1; (z<region.levels && match==255); z++)
|
|
{
|
|
if (signal<region.level[z-1] && signal>=region.level[z])
|
|
match=z;
|
|
}
|
|
}
|
|
|
|
if (match<region.levels)
|
|
{
|
|
red=region.color[match][0];
|
|
green=region.color[match][1];
|
|
blue=region.color[match][2];
|
|
}
|
|
|
|
if (mask&2)
|
|
{
|
|
/* Text Labels: Red or otherwise */
|
|
|
|
if (red>=180 && green<=75 && blue<=75)
|
|
fprintf(fd,"%c%c%c",255^red,255^green,255^blue);
|
|
else
|
|
fprintf(fd,"%c%c%c",255,0,0);
|
|
|
|
cityorcounty=1;
|
|
}
|
|
|
|
else if (mask&4)
|
|
{
|
|
/* County Boundaries: Black */
|
|
|
|
fprintf(fd,"%c%c%c",0,0,0);
|
|
|
|
cityorcounty=1;
|
|
}
|
|
|
|
if (cityorcounty==0)
|
|
{
|
|
if (contour_threshold!=0 && signal<contour_threshold)
|
|
{
|
|
if (ngs)
|
|
fprintf(fd,"%c%c%c",255,255,255);
|
|
else
|
|
{
|
|
/* Display land or sea elevation */
|
|
|
|
if (dem[indx].data[x0][y0]==0)
|
|
fprintf(fd,"%c%c%c",0,0,170);
|
|
else
|
|
{
|
|
terrain=(unsigned)(0.5+pow((double)(dem[indx].data[x0][y0]-min_elevation),one_over_gamma)*conversion);
|
|
fprintf(fd,"%c%c%c",terrain,terrain,terrain);
|
|
}
|
|
}
|
|
}
|
|
|
|
else
|
|
{
|
|
/* Plot field strength regions in color */
|
|
|
|
if (red!=0 || green!=0 || blue!=0)
|
|
fprintf(fd,"%c%c%c",red,green,blue);
|
|
|
|
else /* terrain / sea-level */
|
|
{
|
|
if (ngs)
|
|
fprintf(fd,"%c%c%c",255,255,255);
|
|
else
|
|
{
|
|
if (dem[indx].data[x0][y0]==0)
|
|
fprintf(fd,"%c%c%c",0,0,170);
|
|
else
|
|
{
|
|
/* Elevation: Greyscale */
|
|
terrain=(unsigned)(0.5+pow((double)(dem[indx].data[x0][y0]-min_elevation),one_over_gamma)*conversion);
|
|
fprintf(fd,"%c%c%c",terrain,terrain,terrain);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
else
|
|
{
|
|
/* We should never get here, but if */
|
|
/* we do, display the region as black */
|
|
|
|
fprintf(fd,"%c%c%c",0,0,0);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
fclose(fd);
|
|
|
|
}
|
|
|
|
void DoRxdPwr(char *filename, unsigned char geo, unsigned char kml, unsigned char ngs, struct site *xmtr, unsigned char txsites)
|
|
{
|
|
/* This function generates a topographic map in Portable Pix Map
|
|
(PPM) format based on the signal power level values held in the
|
|
signal[][] array. The image created is rotated counter-clockwise
|
|
90 degrees from its representation in dem[][] so that north
|
|
points up and east points right in the image generated. */
|
|
|
|
char mapfile[255], geofile[255], kmlfile[255];
|
|
unsigned width, height, terrain, red, green, blue;
|
|
unsigned char found, mask, cityorcounty;
|
|
int indx, x, y, z=1, x0, y0, dBm, match;
|
|
double conversion, one_over_gamma, lat, lon, minwest;
|
|
FILE *fd;
|
|
|
|
one_over_gamma=1.0/GAMMA;
|
|
conversion=255.0/pow((double)(max_elevation-min_elevation),one_over_gamma);
|
|
|
|
width=(unsigned)(ippd*ReduceAngle(max_west-min_west));
|
|
height=(unsigned)(ippd*ReduceAngle(max_north-min_north));
|
|
|
|
LoadDBMColors(xmtr[0]);
|
|
|
|
if (filename[0]==0)
|
|
{
|
|
strncpy(filename, xmtr[0].filename,254);
|
|
filename[strlen(filename)-4]=0; /* Remove .qth */
|
|
}
|
|
|
|
y=strlen(filename);
|
|
|
|
if (y>4)
|
|
{
|
|
if (filename[y-1]=='m' && filename[y-2]=='p' && filename[y-3]=='p' && filename[y-4]=='.')
|
|
y-=4;
|
|
}
|
|
|
|
for (x=0; x<y; x++)
|
|
{
|
|
mapfile[x]=filename[x];
|
|
geofile[x]=filename[x];
|
|
kmlfile[x]=filename[x];
|
|
}
|
|
|
|
mapfile[x]='.';
|
|
geofile[x]='.';
|
|
kmlfile[x]='.';
|
|
mapfile[x+1]='p';
|
|
geofile[x+1]='g';
|
|
kmlfile[x+1]='k';
|
|
mapfile[x+2]='p';
|
|
geofile[x+2]='e';
|
|
kmlfile[x+2]='m';
|
|
mapfile[x+3]='m';
|
|
geofile[x+3]='o';
|
|
kmlfile[x+3]='l';
|
|
mapfile[x+4]=0;
|
|
geofile[x+4]=0;
|
|
kmlfile[x+4]=0;
|
|
|
|
minwest=((double)min_west)+dpp;
|
|
|
|
if (minwest>360.0)
|
|
minwest-=360.0;
|
|
|
|
north=(double)max_north-dpp;
|
|
|
|
|
|
south=(double)min_north; /* No bottom legend */
|
|
|
|
|
|
east=(minwest<180.0?-minwest:360.0-min_west);
|
|
west=(double)(max_west<180?-max_west:360-max_west);
|
|
|
|
fd=fopen(mapfile,"wb");
|
|
|
|
fprintf(fd,"P6\n%u %u\n255\n",width,(kml?height:height+30));
|
|
if(debug){
|
|
fprintf(stdout,"\nWriting \"%s\" (%ux%u pixmap image)... ",mapfile,width,(kml?height:height+30));
|
|
fflush(stdout);
|
|
}
|
|
// WriteKML()
|
|
//writeKML(xmtr,filename);
|
|
|
|
for (y=0, lat=north; y<(int)height; y++, lat=north-(dpp*(double)y))
|
|
{
|
|
for (x=0, lon=max_west; x<(int)width; x++, lon=max_west-(dpp*(double)x))
|
|
{
|
|
if (lon<0.0)
|
|
lon+=360.0;
|
|
|
|
for (indx=0, found=0; indx<MAXPAGES && found==0;)
|
|
{
|
|
x0=(int)rint(ppd*(lat-(double)dem[indx].min_north));
|
|
y0=mpi-(int)rint(ppd*(LonDiff((double)dem[indx].max_west,lon)));
|
|
|
|
if (x0>=0 && x0<=mpi && y0>=0 && y0<=mpi)
|
|
found=1;
|
|
else
|
|
indx++;
|
|
}
|
|
|
|
if (found)
|
|
{
|
|
mask=dem[indx].mask[x0][y0];
|
|
dBm=(dem[indx].signal[x0][y0])-200;
|
|
cityorcounty=0;
|
|
|
|
match=255;
|
|
|
|
red=0;
|
|
green=0;
|
|
blue=0;
|
|
|
|
if (dBm>=region.level[0])
|
|
match=0;
|
|
else
|
|
{
|
|
for (z=1; (z<region.levels && match==255); z++)
|
|
{
|
|
if (dBm<region.level[z-1] && dBm>=region.level[z])
|
|
match=z;
|
|
}
|
|
}
|
|
|
|
if (match<region.levels)
|
|
{
|
|
red=region.color[match][0];
|
|
green=region.color[match][1];
|
|
blue=region.color[match][2];
|
|
}
|
|
|
|
if (mask&2)
|
|
{
|
|
/* Text Labels: Red or otherwise */
|
|
|
|
if (red>=180 && green<=75 && blue<=75 && dBm!=0)
|
|
fprintf(fd,"%c%c%c",255^red,255^green,255^blue);
|
|
else
|
|
fprintf(fd,"%c%c%c",255,0,0);
|
|
|
|
cityorcounty=1;
|
|
}
|
|
|
|
else if (mask&4)
|
|
{
|
|
/* County Boundaries: Black */
|
|
|
|
fprintf(fd,"%c%c%c",0,0,0);
|
|
|
|
cityorcounty=1;
|
|
}
|
|
|
|
if (cityorcounty==0)
|
|
{
|
|
if (contour_threshold!=0 && dBm<contour_threshold)
|
|
{
|
|
if (ngs) /* No terrain */
|
|
fprintf(fd,"%c%c%c",255,255,255);
|
|
else
|
|
{
|
|
/* Display land or sea elevation */
|
|
|
|
if (dem[indx].data[x0][y0]==0)
|
|
fprintf(fd,"%c%c%c",0,0,170);
|
|
else
|
|
{
|
|
terrain=(unsigned)(0.5+pow((double)(dem[indx].data[x0][y0]-min_elevation),one_over_gamma)*conversion);
|
|
fprintf(fd,"%c%c%c",terrain,terrain,terrain);
|
|
}
|
|
}
|
|
}
|
|
|
|
else
|
|
{
|
|
/* Plot signal power level regions in color */
|
|
|
|
if (red!=0 || green!=0 || blue!=0)
|
|
fprintf(fd,"%c%c%c",red,green,blue);
|
|
|
|
else /* terrain / sea-level */
|
|
{
|
|
if (ngs)
|
|
fprintf(fd,"%c%c%c",255,255,255);
|
|
else
|
|
{
|
|
if (dem[indx].data[x0][y0]==0)
|
|
fprintf(fd,"%c%c%c",0,0,170);
|
|
else
|
|
{
|
|
/* Elevation: Greyscale */
|
|
terrain=(unsigned)(0.5+pow((double)(dem[indx].data[x0][y0]-min_elevation),one_over_gamma)*conversion);
|
|
fprintf(fd,"%c%c%c",terrain,terrain,terrain);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
else
|
|
{
|
|
/* We should never get here, but if */
|
|
/* we do, display the region as black */
|
|
|
|
fprintf(fd,"%c%c%c",0,0,0);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
fclose(fd);
|
|
|
|
}
|
|
|
|
void DoLOS(char *filename, unsigned char geo, unsigned char kml, unsigned char ngs, struct site *xmtr, unsigned char txsites)
|
|
{
|
|
/* This function generates a topographic map in Portable Pix Map
|
|
(PPM) format based on the signal power level values held in the
|
|
signal[][] array. The image created is rotated counter-clockwise
|
|
90 degrees from its representation in dem[][] so that north
|
|
points up and east points right in the image generated. */
|
|
|
|
char mapfile[255], geofile[255], kmlfile[255];
|
|
unsigned width, height, terrain;
|
|
unsigned char found, mask;
|
|
int indx, x, y, x0, y0;
|
|
double conversion, one_over_gamma, lat, lon, minwest;
|
|
FILE *fd;
|
|
|
|
one_over_gamma=1.0/GAMMA;
|
|
conversion=255.0/pow((double)(max_elevation-min_elevation),one_over_gamma);
|
|
|
|
width=(unsigned)(ippd*ReduceAngle(max_west-min_west));
|
|
height=(unsigned)(ippd*ReduceAngle(max_north-min_north));
|
|
|
|
//LoadDBMColors(xmtr[0]);
|
|
|
|
if (filename[0]==0)
|
|
{
|
|
strncpy(filename, xmtr[0].filename,254);
|
|
filename[strlen(filename)-4]=0; /* Remove .qth */
|
|
}
|
|
|
|
y=strlen(filename);
|
|
|
|
if (y>4)
|
|
{
|
|
if (filename[y-1]=='m' && filename[y-2]=='p' && filename[y-3]=='p' && filename[y-4]=='.')
|
|
y-=4;
|
|
}
|
|
|
|
for (x=0; x<y; x++)
|
|
{
|
|
mapfile[x]=filename[x];
|
|
geofile[x]=filename[x];
|
|
kmlfile[x]=filename[x];
|
|
}
|
|
|
|
mapfile[x]='.';
|
|
geofile[x]='.';
|
|
kmlfile[x]='.';
|
|
mapfile[x+1]='p';
|
|
geofile[x+1]='g';
|
|
kmlfile[x+1]='k';
|
|
mapfile[x+2]='p';
|
|
geofile[x+2]='e';
|
|
kmlfile[x+2]='m';
|
|
mapfile[x+3]='m';
|
|
geofile[x+3]='o';
|
|
kmlfile[x+3]='l';
|
|
mapfile[x+4]=0;
|
|
geofile[x+4]=0;
|
|
kmlfile[x+4]=0;
|
|
|
|
minwest=((double)min_west)+dpp;
|
|
|
|
if (minwest>360.0)
|
|
minwest-=360.0;
|
|
|
|
north=(double)max_north-dpp;
|
|
|
|
|
|
south=(double)min_north; /* No bottom legend */
|
|
|
|
|
|
east=(minwest<180.0?-minwest:360.0-min_west);
|
|
west=(double)(max_west<180?-max_west:360-max_west);
|
|
|
|
fd=fopen(mapfile,"wb");
|
|
|
|
fprintf(fd,"P6\n%u %u\n255\n",width,(kml?height:height+30));
|
|
if(debug){
|
|
fprintf(stdout,"\nWriting \"%s\" (%ux%u pixmap image)... ",mapfile,width,(kml?height:height+30));
|
|
fflush(stdout);
|
|
}
|
|
// WriteKML()
|
|
//writeKML(xmtr,filename);
|
|
|
|
for (y=0, lat=north; y<(int)height; y++, lat=north-(dpp*(double)y))
|
|
{
|
|
for (x=0, lon=max_west; x<(int)width; x++, lon=max_west-(dpp*(double)x))
|
|
{
|
|
if (lon<0.0)
|
|
lon+=360.0;
|
|
|
|
for (indx=0, found=0; indx<MAXPAGES && found==0;)
|
|
{
|
|
x0=(int)rint(ppd*(lat-(double)dem[indx].min_north));
|
|
y0=mpi-(int)rint(ppd*(LonDiff((double)dem[indx].max_west,lon)));
|
|
|
|
if (x0>=0 && x0<=mpi && y0>=0 && y0<=mpi)
|
|
found=1;
|
|
else
|
|
indx++;
|
|
}
|
|
|
|
if (found)
|
|
{
|
|
mask=dem[indx].mask[x0][y0];
|
|
|
|
if (mask&2)
|
|
/* Text Labels: Red */
|
|
fprintf(fd,"%c%c%c",255,0,0);
|
|
|
|
else if (mask&4)
|
|
/* County Boundaries: Light Cyan */
|
|
fprintf(fd,"%c%c%c",128,128,255);
|
|
|
|
else switch (mask&57)
|
|
{
|
|
case 1:
|
|
/* TX1: Green */
|
|
fprintf(fd,"%c%c%c",0,255,0);
|
|
break;
|
|
|
|
case 8:
|
|
/* TX2: Cyan */
|
|
fprintf(fd,"%c%c%c",0,255,255);
|
|
break;
|
|
|
|
case 9:
|
|
/* TX1 + TX2: Yellow */
|
|
fprintf(fd,"%c%c%c",255,255,0);
|
|
break;
|
|
|
|
case 16:
|
|
/* TX3: Medium Violet */
|
|
fprintf(fd,"%c%c%c",147,112,219);
|
|
break;
|
|
|
|
case 17:
|
|
/* TX1 + TX3: Pink */
|
|
fprintf(fd,"%c%c%c",255,192,203);
|
|
break;
|
|
|
|
case 24:
|
|
/* TX2 + TX3: Orange */
|
|
fprintf(fd,"%c%c%c",255,165,0);
|
|
break;
|
|
|
|
case 25:
|
|
/* TX1 + TX2 + TX3: Dark Green */
|
|
fprintf(fd,"%c%c%c",0,100,0);
|
|
break;
|
|
|
|
case 32:
|
|
/* TX4: Sienna 1 */
|
|
fprintf(fd,"%c%c%c",255,130,71);
|
|
break;
|
|
|
|
case 33:
|
|
/* TX1 + TX4: Green Yellow */
|
|
fprintf(fd,"%c%c%c",173,255,47);
|
|
break;
|
|
|
|
case 40:
|
|
/* TX2 + TX4: Dark Sea Green 1 */
|
|
fprintf(fd,"%c%c%c",193,255,193);
|
|
break;
|
|
|
|
case 41:
|
|
/* TX1 + TX2 + TX4: Blanched Almond */
|
|
fprintf(fd,"%c%c%c",255,235,205);
|
|
break;
|
|
|
|
case 48:
|
|
/* TX3 + TX4: Dark Turquoise */
|
|
fprintf(fd,"%c%c%c",0,206,209);
|
|
break;
|
|
|
|
case 49:
|
|
/* TX1 + TX3 + TX4: Medium Spring Green */
|
|
fprintf(fd,"%c%c%c",0,250,154);
|
|
break;
|
|
|
|
case 56:
|
|
/* TX2 + TX3 + TX4: Tan */
|
|
fprintf(fd,"%c%c%c",210,180,140);
|
|
break;
|
|
|
|
case 57:
|
|
/* TX1 + TX2 + TX3 + TX4: Gold2 */
|
|
fprintf(fd,"%c%c%c",238,201,0);
|
|
break;
|
|
|
|
default:
|
|
if (ngs) /* No terrain */
|
|
fprintf(fd,"%c%c%c",255,255,255);
|
|
else
|
|
{
|
|
/* Sea-level: Medium Blue */
|
|
if (dem[indx].data[x0][y0]==0)
|
|
fprintf(fd,"%c%c%c",0,0,170);
|
|
else
|
|
{
|
|
/* Elevation: Greyscale */
|
|
terrain=(unsigned)(0.5+pow((double)(dem[indx].data[x0][y0]-min_elevation),one_over_gamma)*conversion);
|
|
fprintf(fd,"%c%c%c",terrain,terrain,terrain);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
else
|
|
{
|
|
/* We should never get here, but if */
|
|
/* we do, display the region as black */
|
|
|
|
fprintf(fd,"%c%c%c",0,0,0);
|
|
}
|
|
}
|
|
}
|
|
|
|
fclose(fd);
|
|
|
|
}
|
|
|
|
|
|
void LoadTopoData(int max_lon, int min_lon, int max_lat, int min_lat, int winfiles)
|
|
{
|
|
/* This function loads the SDF files required
|
|
to cover the limits of the region specified. */
|
|
|
|
int x, y, width, ymin, ymax;
|
|
|
|
width=ReduceAngle(max_lon-min_lon);
|
|
|
|
if ((max_lon-min_lon)<=180.0)
|
|
{
|
|
for (y=0; y<=width; y++)
|
|
for (x=min_lat; x<=max_lat; x++)
|
|
{
|
|
ymin=(int)(min_lon+(double)y);
|
|
|
|
while (ymin<0)
|
|
ymin+=360;
|
|
|
|
while (ymin>=360)
|
|
ymin-=360;
|
|
|
|
ymax=ymin+1;
|
|
|
|
while (ymax<0)
|
|
ymax+=360;
|
|
|
|
while (ymax>=360)
|
|
ymax-=360;
|
|
|
|
if (winfiles==1){
|
|
if (ippd==3600)
|
|
snprintf(string,19,"%d=%d=%d=%d=hd",x, x+1, ymin, ymax);
|
|
else
|
|
snprintf(string,16,"%d=%d=%d=%d",x, x+1, ymin, ymax);
|
|
|
|
}else{
|
|
if (ippd==3600)
|
|
snprintf(string,19,"%d:%d:%d:%d=hd",x, x+1, ymin, ymax);
|
|
else
|
|
snprintf(string,16,"%d:%d:%d:%d",x, x+1, ymin, ymax);
|
|
}
|
|
|
|
LoadSDF(string,winfiles);
|
|
}
|
|
}
|
|
|
|
else
|
|
{
|
|
for (y=0; y<=width; y++)
|
|
for (x=min_lat; x<=max_lat; x++)
|
|
{
|
|
ymin=max_lon+y;
|
|
|
|
while (ymin<0)
|
|
ymin+=360;
|
|
|
|
while (ymin>=360)
|
|
ymin-=360;
|
|
|
|
ymax=ymin+1;
|
|
|
|
while (ymax<0)
|
|
ymax+=360;
|
|
|
|
while (ymax>=360)
|
|
ymax-=360;
|
|
|
|
if (winfiles==1){
|
|
if (ippd==3600)
|
|
snprintf(string,19,"%d=%d=%d=%d=hd",x, x+1, ymin, ymax);
|
|
else
|
|
snprintf(string,16,"%d=%d=%d=%d",x, x+1, ymin, ymax);
|
|
|
|
}else{
|
|
if (ippd==3600)
|
|
snprintf(string,19,"%d:%d:%d:%d=hd",x, x+1, ymin, ymax);
|
|
else
|
|
snprintf(string,16,"%d:%d:%d:%d",x, x+1, ymin, ymax);
|
|
}
|
|
|
|
LoadSDF(string,winfiles);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
void LoadUDT(char *filename)
|
|
{
|
|
/* This function reads a file containing User-Defined Terrain
|
|
features for their addition to the digital elevation model
|
|
data used by SPLAT!. Elevations in the UDT file are evaluated
|
|
and then copied into a temporary file under /tmp. Then the
|
|
contents of the temp file are scanned, and if found to be unique,
|
|
are added to the ground elevations described by the digital
|
|
elevation data already loaded into memory. */
|
|
|
|
int i, x, y, z, ypix, xpix, tempxpix, tempypix, fd=0, n=0, pixelfound=0;
|
|
char input[80], str[3][80], tempname[15], *pointer=NULL, *s=NULL;
|
|
double latitude, longitude, height, tempheight;
|
|
FILE *fd1=NULL, *fd2=NULL;
|
|
|
|
strcpy(tempname,"/tmp/XXXXXX\0");
|
|
|
|
fd1=fopen(filename,"r");
|
|
|
|
if (fd1!=NULL)
|
|
{
|
|
fd=mkstemp(tempname);
|
|
fd2=fopen(tempname,"w");
|
|
|
|
s=fgets(input,78,fd1);
|
|
|
|
pointer=strchr(input,';');
|
|
|
|
if (pointer!=NULL)
|
|
*pointer=0;
|
|
|
|
|
|
while (feof(fd1)==0)
|
|
{
|
|
/* Parse line for latitude, longitude, height */
|
|
|
|
for (x=0, y=0, z=0; x<78 && input[x]!=0 && z<3; x++)
|
|
{
|
|
if (input[x]!=',' && y<78)
|
|
{
|
|
str[z][y]=input[x];
|
|
y++;
|
|
}
|
|
|
|
else
|
|
{
|
|
str[z][y]=0;
|
|
z++;
|
|
y=0;
|
|
}
|
|
}
|
|
|
|
latitude=ReadBearing(str[0]);
|
|
longitude=ReadBearing(str[1]);
|
|
|
|
if (longitude<0.0)
|
|
longitude+=360;
|
|
|
|
/* Remove <CR> and/or <LF> from antenna height string */
|
|
|
|
for (i=0; str[2][i]!=13 && str[2][i]!=10 && str[2][i]!=0; i++);
|
|
|
|
str[2][i]=0;
|
|
|
|
/* The terrain feature may be expressed in either
|
|
feet or meters. If the letter 'M' or 'm' is
|
|
discovered in the string, then this is an
|
|
indication that the value given is expressed
|
|
in meters. Otherwise the height is interpreted
|
|
as being expressed in feet. */
|
|
|
|
for (i=0; str[2][i]!='M' && str[2][i]!='m' && str[2][i]!=0 && i<48; i++);
|
|
|
|
if (str[2][i]=='M' || str[2][i]=='m')
|
|
{
|
|
str[2][i]=0;
|
|
height=rint(atof(str[2]));
|
|
}
|
|
|
|
else
|
|
{
|
|
str[2][i]=0;
|
|
height=rint(METERS_PER_FOOT*atof(str[2]));
|
|
}
|
|
|
|
if (height>0.0)
|
|
fprintf(fd2,"%d, %d, %f\n",(int)rint(latitude/dpp), (int)rint(longitude/dpp), height);
|
|
|
|
|
|
s=fgets(input,78,fd1);
|
|
|
|
pointer=strchr(input,';');
|
|
|
|
if (pointer!=NULL)
|
|
*pointer=0;
|
|
}
|
|
|
|
fclose(fd1);
|
|
fclose(fd2);
|
|
close(fd);
|
|
|
|
|
|
fd1=fopen(tempname,"r");
|
|
fd2=fopen(tempname,"r");
|
|
|
|
y=0;
|
|
|
|
n=fscanf(fd1,"%d, %d, %lf", &xpix, &ypix, &height);
|
|
|
|
do
|
|
{
|
|
x=0;
|
|
z=0;
|
|
|
|
n=fscanf(fd2,"%d, %d, %lf", &tempxpix, &tempypix, &tempheight);
|
|
|
|
do
|
|
{
|
|
if (x>y && xpix==tempxpix && ypix==tempypix)
|
|
{
|
|
z=1; /* Dupe! */
|
|
|
|
if (tempheight>height)
|
|
height=tempheight;
|
|
}
|
|
|
|
else
|
|
{
|
|
n=fscanf(fd2,"%d, %d, %lf", &tempxpix, &tempypix, &tempheight);
|
|
x++;
|
|
}
|
|
|
|
} while (feof(fd2)==0 && z==0);
|
|
|
|
if (z==0) /* No duplicate found */
|
|
|
|
//fprintf(stdout,"%lf, %lf \n",xpix*dpp, ypix*dpp);
|
|
fflush(stdout);
|
|
pixelfound = AddElevation(xpix*dpp, ypix*dpp, height);
|
|
//fprintf(stdout,"%d \n",pixelfound);
|
|
fflush(stdout);
|
|
|
|
n=fscanf(fd1,"%d, %d, %lf", &xpix, &ypix, &height);
|
|
y++;
|
|
|
|
rewind(fd2);
|
|
|
|
} while (feof(fd1)==0);
|
|
|
|
fclose(fd1);
|
|
fclose(fd2);
|
|
unlink(tempname);
|
|
}
|
|
|
|
//else
|
|
//fprintf(stderr,"\n*** ERROR: \"%s\": not found!",filename);
|
|
|
|
//fprintf(stdout,"\n");
|
|
}
|
|
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
int x, y, z=0, min_lat, min_lon, max_lat, max_lon,
|
|
rxlat, rxlon, txlat, txlon, west_min, west_max,
|
|
north_min, north_max, propmodel, winfiles,knifeedge=0;
|
|
|
|
unsigned char LRmap=0, map=0,txsites=0,
|
|
topomap=0, geo=0, kml=0, area_mode=0, max_txsites, ngs=0;
|
|
|
|
char mapfile[255], elevation_file[255], longley_file[255], terrain_file[255],
|
|
string[255], rxfile[255],txfile[255], udt_file[255], rxsite=0, ani_filename[255],
|
|
ano_filename[255];
|
|
|
|
double altitude=0.0, altitudeLR=0.0, tx_range=0.0,
|
|
rx_range=0.0, deg_range=0.0, deg_limit=0.0,
|
|
deg_range_lon;
|
|
|
|
struct site tx_site[32], rx_site;
|
|
|
|
|
|
|
|
strncpy(ss_version,"1.3.8\0",6);
|
|
strncpy(ss_name,"Signal Server\0",14);
|
|
|
|
if (argc==1)
|
|
{
|
|
fprintf(stdout,"\n\t\t -- %s %s options --\n\n",ss_name, ss_version);
|
|
fprintf(stdout," -d Directory containing .sdf tiles\n");
|
|
fprintf(stdout," -lat Tx Latitude (decimal degrees)\n");
|
|
fprintf(stdout," -lon Tx Longitude (decimal degrees) Positive 0-360 \n");
|
|
fprintf(stdout," -txh Tx Height (above ground)\n");
|
|
fprintf(stdout," -f Tx Frequency (MHz) 20MHz to 100Ghz (LOS after 20Ghz)\n");
|
|
fprintf(stdout," -erp Tx Effective Radiated Power (Watts)\n");
|
|
fprintf(stdout," -rxh Rx Height(s) (optional. Default=0.1)\n");
|
|
fprintf(stdout," -rt Rx Threshold (dB / dBm / dBuV/m)\n");
|
|
fprintf(stdout," -hp Horizontal Polarisation (default=vertical)\n");
|
|
fprintf(stdout," -gc Ground clutter (feet/meters)\n");
|
|
fprintf(stdout," -udt User defined terrain filename\n");
|
|
fprintf(stdout," -dbm Plot Rxd signal power instead of field strength\n");
|
|
fprintf(stdout," -m Metric units of measurement\n");
|
|
fprintf(stdout," -te Terrain code 1-6 (optional)\n");
|
|
fprintf(stdout," -terdic Terrain dielectric value 2-80 (optional)\n");
|
|
fprintf(stdout," -tercon Terrain conductivity 0.01-0.0001 (optional)\n");
|
|
fprintf(stdout," -cl Climate code 1-6 (optional)\n");
|
|
fprintf(stdout," -o Filename. Required. \n");
|
|
fprintf(stdout," -R Radius (miles/kilometers)\n");
|
|
fprintf(stdout," -res Pixels per degree. 300/600/1200(default)/3600 (optional)\n");
|
|
fprintf(stdout," -t Terrain background\n");
|
|
fprintf(stdout," -pm Propagation model. 1: ITM (Default), 2: LOS, 3-5: Hata, 6: COST231, 7: ITU525\n");
|
|
fprintf(stdout," -ked Knife edge diffraction (Default for ITM)\n");
|
|
fprintf(stdout," -wf Win32 SDF tile names ('=' not ':')\n");
|
|
fprintf(stdout," -dbg Debug mode\n\n");
|
|
|
|
|
|
|
|
fflush(stdout);
|
|
|
|
return 1;
|
|
}
|
|
|
|
y=argc-1;
|
|
|
|
kml=0;
|
|
geo=0;
|
|
dbm=0;
|
|
gpsav=0;
|
|
metric=0;
|
|
rxfile[0]=0;
|
|
txfile[0]=0;
|
|
string[0]=0;
|
|
mapfile[0]=0;
|
|
clutter=0.0;
|
|
forced_erp=-1.0;
|
|
forced_freq=0.0;
|
|
elevation_file[0]=0;
|
|
terrain_file[0]=0;
|
|
sdf_path[0]=0;
|
|
udt_file[0]=0;
|
|
path.length=0;
|
|
max_txsites=30;
|
|
fzone_clearance=0.6;
|
|
contour_threshold=0;
|
|
rx_site.lat=91.0;
|
|
rx_site.lon=361.0;
|
|
longley_file[0]=0;
|
|
ano_filename[0]=0;
|
|
ani_filename[0]=0;
|
|
earthradius=EARTHRADIUS;
|
|
max_range=1.0;
|
|
propmodel=1; //ITM
|
|
winfiles=0;
|
|
|
|
lat=0;
|
|
lon=0;
|
|
txh=0;
|
|
ngs=1; // no terrain background
|
|
kml=1;
|
|
|
|
map=1;
|
|
LRmap=1;
|
|
area_mode=1;
|
|
ippd=IPPD; // default resolution
|
|
|
|
sscanf("0.1","%lf",&altitudeLR);
|
|
|
|
// Defaults
|
|
LR.eps_dielect=15.0; // Farmland
|
|
LR.sgm_conductivity=0.005; // Farmland
|
|
LR.eno_ns_surfref=301.0;
|
|
LR.frq_mhz=19.0; // Deliberately too low
|
|
LR.radio_climate=5; // continental
|
|
LR.pol=1; // vert
|
|
LR.conf=0.50;
|
|
LR.rel=0.50;
|
|
LR.erp=0.0; // will default to Path Loss
|
|
|
|
tx_site[0].lat=91.0;
|
|
tx_site[0].lon=361.0;
|
|
|
|
|
|
for (x=0; x<MAXPAGES; x++)
|
|
{
|
|
dem[x].min_el=32768;
|
|
dem[x].max_el=-32768;
|
|
dem[x].min_north=90;
|
|
dem[x].max_north=-90;
|
|
dem[x].min_west=360;
|
|
dem[x].max_west=-1;
|
|
}
|
|
|
|
/* Scan for command line arguments */
|
|
|
|
for (x=1; x<=y; x++)
|
|
{
|
|
|
|
if (strcmp(argv[x],"-res")==0)
|
|
{
|
|
z=x+1;
|
|
|
|
if (z<=y && argv[z][0] && argv[z][0]!='-')
|
|
{
|
|
|
|
sscanf(argv[z],"%d",&ippd);
|
|
|
|
switch (ippd)
|
|
{
|
|
case 300:
|
|
MAXRAD=300;
|
|
jgets=3;
|
|
break;
|
|
|
|
case 600:
|
|
MAXRAD=150;
|
|
jgets=1;
|
|
break;
|
|
|
|
case 3600:
|
|
MAXRAD=100;
|
|
ippd=3600;
|
|
jgets=0;
|
|
break;
|
|
|
|
|
|
default:
|
|
MAXRAD=100;
|
|
ippd=1200;
|
|
jgets=0;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (strcmp(argv[x],"-R")==0)
|
|
{
|
|
z=x+1;
|
|
|
|
if (z<=y && argv[z][0] && argv[z][0]!='-')
|
|
{
|
|
sscanf(argv[z],"%lf",&max_range);
|
|
|
|
}
|
|
}
|
|
|
|
|
|
if (strcmp(argv[x],"-gc")==0)
|
|
{
|
|
z=x+1;
|
|
|
|
if (z<=y && argv[z][0] && argv[z][0]!='-')
|
|
{
|
|
sscanf(argv[z],"%lf",&clutter);
|
|
|
|
if (clutter<0.0)
|
|
clutter=0.0;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
if (strcmp(argv[x],"-o")==0)
|
|
{
|
|
z=x+1;
|
|
|
|
if (z<=y && argv[z][0] && argv[z][0]!='-')
|
|
{
|
|
strncpy(mapfile,argv[z],253);
|
|
strncpy (tx_site[0].name,"Tx",2);
|
|
strncpy (tx_site[0].filename,argv[z],253);
|
|
LoadPAT(argv[z]);
|
|
|
|
}
|
|
map=1;
|
|
}
|
|
|
|
|
|
if (strcmp(argv[x],"-rt")==0)
|
|
{
|
|
z=x+1;
|
|
|
|
if (z<=y && argv[z][0]) /* A minus argument is legal here */
|
|
sscanf(argv[z],"%d",&contour_threshold);
|
|
}
|
|
|
|
if (strcmp(argv[x],"-m")==0)
|
|
{
|
|
metric=1;
|
|
|
|
}
|
|
|
|
if (strcmp(argv[x],"-t")==0)
|
|
{
|
|
ngs=0; // greyscale background
|
|
}
|
|
|
|
if (strcmp(argv[x],"-dbm")==0)
|
|
dbm=1;
|
|
|
|
if (strcmp(argv[x],"-d")==0)
|
|
{
|
|
z=x+1;
|
|
|
|
if (z<=y && argv[z][0] && argv[z][0]!='-')
|
|
strncpy(sdf_path,argv[z],253);
|
|
}
|
|
|
|
if (strcmp(argv[x],"-lat")==0)
|
|
{
|
|
z=x+1;
|
|
|
|
if (z<=y && argv[z][0]) // Now allowing for southern hemisphere!
|
|
{
|
|
tx_site[0].lat = ReadBearing(argv[z]);
|
|
}
|
|
|
|
|
|
|
|
}
|
|
if (strcmp(argv[x],"-lon")==0)
|
|
{
|
|
z=x+1;
|
|
|
|
if (z<=y && argv[z][0]) /* A minus argument is legal here */
|
|
{
|
|
|
|
tx_site[0].lon = ReadBearing(argv[z]);
|
|
|
|
tx_site[0].lon*=-1;
|
|
|
|
if (tx_site[0].lon<0.0)
|
|
tx_site[0].lon+=360.0;
|
|
}
|
|
|
|
|
|
|
|
}
|
|
if (strcmp(argv[x],"-txh")==0)
|
|
{
|
|
z=x+1;
|
|
|
|
if (z<=y && argv[z][0] && argv[z][0]!='-')
|
|
{
|
|
sscanf(argv[z],"%f",&tx_site[0].alt);
|
|
}
|
|
txsites=1;
|
|
}
|
|
|
|
|
|
if (strcmp(argv[x],"-rxh")==0)
|
|
{
|
|
z=x+1;
|
|
|
|
if (z<=y && argv[z][0] && argv[z][0]!='-')
|
|
{
|
|
sscanf(argv[z],"%lf",&altitudeLR);
|
|
|
|
}
|
|
}
|
|
|
|
|
|
if (strcmp(argv[x],"-f")==0)
|
|
{
|
|
z=x+1;
|
|
|
|
if (z<=y && argv[z][0] && argv[z][0]!='-')
|
|
{
|
|
sscanf(argv[z],"%lf",&LR.frq_mhz);
|
|
}
|
|
}
|
|
|
|
if (strcmp(argv[x],"-erp")==0)
|
|
{
|
|
z=x+1;
|
|
|
|
if (z<=y && argv[z][0] && argv[z][0]!='-')
|
|
{
|
|
sscanf(argv[z],"%lf",&LR.erp);
|
|
}
|
|
}
|
|
|
|
|
|
if (strcmp(argv[x],"-cl")==0)
|
|
{
|
|
z=x+1;
|
|
|
|
if (z<=y && argv[z][0] && argv[z][0]!='-')
|
|
{
|
|
|
|
sscanf(argv[z],"%d",&LR.radio_climate);
|
|
|
|
}
|
|
}
|
|
if (strcmp(argv[x],"-te")==0)
|
|
{
|
|
z=x+1;
|
|
|
|
if (z<=y && argv[z][0] && argv[z][0]!='-')
|
|
{
|
|
|
|
sscanf(argv[z],"%d",&ter);
|
|
|
|
switch (ter)
|
|
{
|
|
case 1: // Water
|
|
terdic = 80;
|
|
tercon = 0.010;
|
|
break;
|
|
|
|
case 2: // Marsh
|
|
terdic = 12;
|
|
tercon = 0.007;
|
|
break;
|
|
|
|
case 3: // Farmland
|
|
terdic = 15;
|
|
tercon = 0.005;
|
|
break;
|
|
|
|
case 4: //Mountain
|
|
terdic = 13;
|
|
tercon = 0.002;
|
|
break;
|
|
case 5: //Desert
|
|
terdic=13;
|
|
tercon=0.002;
|
|
break;
|
|
case 6: //Urban
|
|
terdic=5;
|
|
tercon=0.001;
|
|
break;
|
|
}
|
|
|
|
LR.eps_dielect = terdic;
|
|
LR.sgm_conductivity = tercon;
|
|
|
|
|
|
}
|
|
}
|
|
|
|
if (strcmp(argv[x],"-terdic")==0)
|
|
{
|
|
z=x+1;
|
|
|
|
if (z<=y && argv[z][0] && argv[z][0]!='-')
|
|
{
|
|
|
|
sscanf(argv[z],"%lf",&terdic);
|
|
|
|
LR.eps_dielect = terdic;
|
|
|
|
}
|
|
}
|
|
|
|
if (strcmp(argv[x],"-tercon")==0)
|
|
{
|
|
z=x+1;
|
|
|
|
if (z<=y && argv[z][0] && argv[z][0]!='-')
|
|
{
|
|
|
|
sscanf(argv[z],"%lf",&tercon);
|
|
|
|
LR.sgm_conductivity = tercon;
|
|
|
|
}
|
|
}
|
|
|
|
if (strcmp(argv[x],"-hp")==0)
|
|
{
|
|
// Horizontal polarisation (0)
|
|
LR.pol = 0;
|
|
}
|
|
|
|
if (strcmp(argv[x],"-dbg")==0)
|
|
{
|
|
debug=1;
|
|
}
|
|
|
|
|
|
ppd=(double)ippd; /* pixels per degree (double) */
|
|
dpp=1.0/ppd; /* degrees per pixel */
|
|
mpi=ippd-1; /* maximum pixel index per degree */
|
|
|
|
|
|
|
|
/*UDT*/
|
|
|
|
if (strcmp(argv[x],"-udt")==0)
|
|
{
|
|
z=x+1;
|
|
|
|
if (z<=y && argv[z][0])
|
|
{
|
|
strncpy(udt_file,argv[z],253);
|
|
}
|
|
}
|
|
|
|
/*Prop model*/
|
|
|
|
if (strcmp(argv[x],"-pm")==0)
|
|
{
|
|
z=x+1;
|
|
|
|
if (z<=y && argv[z][0])
|
|
{
|
|
sscanf(argv[z],"%d",&propmodel);
|
|
}
|
|
}
|
|
|
|
//Knife edge diffraction
|
|
if (strcmp(argv[x],"-ked")==0)
|
|
{
|
|
z=x+1;
|
|
knifeedge=1;
|
|
}
|
|
|
|
//Windows friendly SDF filenames
|
|
if (strcmp(argv[x],"-wf")==0)
|
|
{
|
|
z=x+1;
|
|
winfiles=1;
|
|
}
|
|
}
|
|
|
|
/* ERROR DETECTION */
|
|
if (tx_site[0].lat > 90 || tx_site[0].lat < -90)
|
|
{
|
|
fprintf(stdout,"ERROR: Either the lat was missing or out of range!");
|
|
exit(0);
|
|
|
|
}
|
|
if (tx_site[0].lon > 360 || tx_site[0].lon < 0)
|
|
{
|
|
fprintf(stdout,"ERROR: Either the lon was missing or out of range!");
|
|
exit(0);
|
|
|
|
}
|
|
|
|
if (LR.frq_mhz < 20 || LR.frq_mhz > 100000)
|
|
{
|
|
fprintf(stdout,"ERROR: Either the Frequency was missing or out of range!");
|
|
exit(0);
|
|
}
|
|
if (LR.erp>2000000)
|
|
{
|
|
fprintf(stdout,"ERROR: Power was out of range!");
|
|
exit(0);
|
|
|
|
}
|
|
if (LR.eps_dielect > 80 || LR.eps_dielect < 0.1)
|
|
{
|
|
fprintf(stdout,"ERROR: Ground Dielectric value out of range!");
|
|
exit(0);
|
|
|
|
}
|
|
if (LR.sgm_conductivity > 0.01 || LR.sgm_conductivity < 0.000001)
|
|
{
|
|
fprintf(stdout,"ERROR: Ground conductivity out of range!");
|
|
exit(0);
|
|
|
|
}
|
|
|
|
if (tx_site[0].alt < 0 || tx_site[0].alt > 60000)
|
|
{
|
|
fprintf(stdout,"ERROR: Tx altitude above ground was too high!");
|
|
exit(0);
|
|
}
|
|
if (altitudeLR < 0 || altitudeLR > 60000)
|
|
{
|
|
fprintf(stdout,"ERROR: Rx altitude above ground was too high!");
|
|
exit(0);
|
|
}
|
|
|
|
|
|
if (ippd < 300 || ippd > 3600){
|
|
fprintf(stdout,"ERROR: resolution out of range!");
|
|
exit(0);
|
|
}
|
|
|
|
if(contour_threshold < -200 || contour_threshold > 200)
|
|
{
|
|
fprintf(stdout,"ERROR: Receiver threshold out of range (-200 / +200)");
|
|
exit(0);
|
|
}
|
|
if(propmodel>2 && LR.frq_mhz < 150){
|
|
fprintf(stdout,"ERROR: Frequency too low for Propagation model");
|
|
exit(0);
|
|
}
|
|
|
|
/* ERROR DETECTION COMPLETE */
|
|
|
|
|
|
|
|
if (metric)
|
|
{
|
|
altitudeLR/=METERS_PER_FOOT; /* 10ft * 0.3 = 3.3m */
|
|
max_range/=KM_PER_MILE; /* 10 / 1.6 = 7.5 */
|
|
altitude/=METERS_PER_FOOT;
|
|
tx_site[0].alt/=METERS_PER_FOOT; /* Feet to metres */
|
|
clutter/=METERS_PER_FOOT; /* Feet to metres */
|
|
}
|
|
|
|
/* Ensure a trailing '/' is present in sdf_path */
|
|
|
|
if (sdf_path[0])
|
|
{
|
|
x=strlen(sdf_path);
|
|
|
|
if (sdf_path[x-1]!='/' && x!=0)
|
|
{
|
|
sdf_path[x]='/';
|
|
sdf_path[x+1]=0;
|
|
}
|
|
}
|
|
|
|
x=0;
|
|
y=0;
|
|
|
|
min_lat=70;
|
|
max_lat=-70;
|
|
|
|
min_lon=(int)floor(tx_site[0].lon);
|
|
max_lon=(int)floor(tx_site[0].lon);
|
|
|
|
|
|
txlat=(int)floor(tx_site[0].lat);
|
|
txlon=(int)floor(tx_site[0].lon);
|
|
|
|
if (txlat<min_lat)
|
|
min_lat=txlat;
|
|
|
|
if (txlat>max_lat)
|
|
max_lat=txlat;
|
|
|
|
if (LonDiff(txlon,min_lon)<0.0)
|
|
min_lon=txlon;
|
|
|
|
if (LonDiff(txlon,max_lon)>=0.0)
|
|
max_lon=txlon;
|
|
|
|
|
|
if (rxsite)
|
|
{
|
|
rxlat=(int)floor(rx_site.lat);
|
|
rxlon=(int)floor(rx_site.lon);
|
|
|
|
if (rxlat<min_lat)
|
|
min_lat=rxlat;
|
|
|
|
if (rxlat>max_lat)
|
|
max_lat=rxlat;
|
|
|
|
if (LonDiff(rxlon,min_lon)<0.0)
|
|
min_lon=rxlon;
|
|
|
|
if (LonDiff(rxlon,max_lon)>=0.0)
|
|
max_lon=rxlon;
|
|
}
|
|
|
|
/* Load the required SDF files */
|
|
|
|
LoadTopoData(max_lon, min_lon, max_lat, min_lat, winfiles);
|
|
|
|
if (area_mode || topomap)
|
|
{
|
|
for (z=0; z<txsites && z<max_txsites; z++)
|
|
{
|
|
/* "Ball park" estimates used to load any additional
|
|
SDF files required to conduct this analysis. */
|
|
|
|
tx_range=sqrt(1.5*(tx_site[z].alt+GetElevation(tx_site[z])));
|
|
|
|
if (LRmap)
|
|
rx_range=sqrt(1.5*altitudeLR);
|
|
else
|
|
rx_range=sqrt(1.5*altitude);
|
|
|
|
/* deg_range determines the maximum
|
|
amount of topo data we read */
|
|
|
|
deg_range=(tx_range+rx_range)/57.0;
|
|
|
|
/* max_range regulates the size of the
|
|
analysis. A small, non-zero amount can
|
|
be used to shrink the size of the analysis
|
|
and limit the amount of topo data read by
|
|
ss A large number will increase the
|
|
width of the analysis and the size of
|
|
the map. */
|
|
|
|
if (max_range==0.0)
|
|
max_range=tx_range+rx_range;
|
|
|
|
deg_range=max_range/57.0;
|
|
|
|
// No more than 8 degs
|
|
deg_limit=3.5;
|
|
|
|
|
|
if (fabs(tx_site[z].lat)<70.0)
|
|
deg_range_lon=deg_range/cos(DEG2RAD*tx_site[z].lat);
|
|
else
|
|
deg_range_lon=deg_range/cos(DEG2RAD*70.0);
|
|
|
|
/* Correct for squares in degrees not being square in miles */
|
|
|
|
if (deg_range>deg_limit)
|
|
deg_range=deg_limit;
|
|
|
|
if (deg_range_lon>deg_limit)
|
|
deg_range_lon=deg_limit;
|
|
|
|
north_min=(int)floor(tx_site[z].lat-deg_range);
|
|
north_max=(int)floor(tx_site[z].lat+deg_range);
|
|
|
|
west_min=(int)floor(tx_site[z].lon-deg_range_lon);
|
|
|
|
while (west_min<0)
|
|
west_min+=360;
|
|
|
|
while (west_min>=360)
|
|
west_min-=360;
|
|
|
|
west_max=(int)floor(tx_site[z].lon+deg_range_lon);
|
|
|
|
while (west_max<0)
|
|
west_max+=360;
|
|
|
|
while (west_max>=360)
|
|
west_max-=360;
|
|
|
|
if (north_min<min_lat)
|
|
min_lat=north_min;
|
|
|
|
if (north_max>max_lat)
|
|
max_lat=north_max;
|
|
|
|
if (LonDiff(west_min,min_lon)<0.0)
|
|
min_lon=west_min;
|
|
|
|
if (LonDiff(west_max,max_lon)>=0.0)
|
|
max_lon=west_max;
|
|
}
|
|
|
|
/* Load any additional SDF files, if required */
|
|
|
|
LoadTopoData(max_lon, min_lon, max_lat, min_lat, winfiles);
|
|
}
|
|
|
|
// UDT clutter
|
|
LoadUDT (udt_file);
|
|
|
|
|
|
if (propmodel==2){
|
|
PlotLOSMap(tx_site[0],altitudeLR,ano_filename);
|
|
DoLOS(mapfile,geo,kml,ngs,tx_site,txsites);
|
|
}
|
|
else{
|
|
PlotPropagation(tx_site[0],altitudeLR,ano_filename,propmodel,knifeedge);
|
|
|
|
if (LR.erp==0.0)
|
|
DoPathLoss(mapfile,geo,kml,ngs,tx_site,txsites);
|
|
else
|
|
if (dbm)
|
|
DoRxdPwr(mapfile,geo,kml,ngs,tx_site,txsites);
|
|
else
|
|
DoSigStr(mapfile,geo,kml,ngs,tx_site,txsites);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
fprintf(stdout,"|%.5f",north);
|
|
fprintf(stdout,"|%.5f",east);
|
|
fprintf(stdout,"|%.5f",south);
|
|
fprintf(stdout,"|%.5f|",west);
|
|
|
|
|
|
fflush(stdout);
|
|
|
|
printf("\n");
|
|
|
|
return 0;
|
|
}
|
|
|