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Diffstat (limited to '3773/CH24/EX24.3/Ex24_3.sce')
| -rw-r--r-- | 3773/CH24/EX24.3/Ex24_3.sce | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/3773/CH24/EX24.3/Ex24_3.sce b/3773/CH24/EX24.3/Ex24_3.sce new file mode 100644 index 000000000..11df63691 --- /dev/null +++ b/3773/CH24/EX24.3/Ex24_3.sce @@ -0,0 +1,25 @@ +//Chapter 24: Space Wave Propagation +//Example 24-9.3 +clc; + +//Variable Initialization +tx_h = 100 //Transmitting antenna height (m) +rx_h = 16 //Receiving antenna height (m) +tx_p = 40e3 //Transmitting antenna power radiation (W) +f = 100e6 //Frequency (Hz) +d = 10e3 //Distance (m) +c = 3e8 //Speed of light (m/s) +E = 1e-3 //Signal strength (V/m) + +//Calculations +los = 4.12*(sqrt(tx_h) + sqrt(rx_h)) //LOS distance (km) +wave_lt = c/f //Wavelength (m) + +Es = (88*sqrt(tx_p)/(wave_lt*(d**2)))*tx_h*rx_h //Field strength at distance d (V/m) + +dsig = sqrt(88*sqrt(tx_p)*tx_h*rx_h/(wave_lt*E)) //Distance at which field strength reduces to 1mV/m + +//Result +mprintf( "The LOS distance is %.2f km", los) +mprintf( "\nThe field strength at 10km is %.5f V/m", Es) +mprintf( "\nThe distance at which field strength is 1mV/m is %.d m",dsig) |