forked from ExternalVendorCode/Signal-Server
30 lines
1.2 KiB
C++
30 lines
1.2 KiB
C++
/*****************************************************************************
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* Plane Earth Path Loss model for Signal Server by Alex Farrant *
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* Taken from "Antennas and Propagation for wireless communication systems" *
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* ISBN 978-0-470-84879-1 *
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* 10 August 2016 *
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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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#include <math.h>
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double PlaneEarthLoss(float d, float TxH, float RxH)
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{
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/*
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Plane Earth Loss model
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Frequency: N/A
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Distance (km): Any
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*/
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// Plane earth loss is independent of frequency.
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double dbloss = 40*log10(d) + 20*log10(TxH) + 20*log10(RxH);
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return dbloss;
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}
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