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comparison pathloss/egli.c @ 68:0cfea66a15f3

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pathloss: implement Egli model
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 25 Oct 2024 16:09:52 +0000
parents pathloss/fsl.c@599fac1b882d
children
comparison
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67:d8ccdccd8b2b 68:0cfea66a15f3
1 /*
2 * RF range calculation per Egli model
3 */
4
5 #define _GNU_SOURCE
6 #include <math.h>
7 #include "range_func.h"
8
9 float rf_range_egli(float freq_mhz, float path_loss, float bts_ant_m,
10 float ms_ant_m)
11 {
12 float l, r, x;
13
14 l = 20.0f * log10f(freq_mhz / 40.0f);
15 r = path_loss - l;
16 x = bts_ant_m * ms_ant_m;
17 return sqrtf(x / pow10f(r / -20.0f));
18 }