diff options
Diffstat (limited to '3773/CH24/EX24.1/Ex24_1.sce')
| -rw-r--r-- | 3773/CH24/EX24.1/Ex24_1.sce | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/3773/CH24/EX24.1/Ex24_1.sce b/3773/CH24/EX24.1/Ex24_1.sce new file mode 100644 index 000000000..629ab25e7 --- /dev/null +++ b/3773/CH24/EX24.1/Ex24_1.sce @@ -0,0 +1,25 @@ +//Chapter 24: Space Wave Propagation +//Example 24-9.1 +clc; + +//Variable Initialization +tx_h = 49.0 //Transmitting antenna height (m) +rx_h = 25.0 //Receiving antenna height (m) +f = 100e6 //Frequency (Hz) +tx_p = 100.0 //Transmitted power (W) +c = 3e8 //Speed of light (m/s) +a = 6370 //Earth's radius (km) + +//Calculation +wave_lt = c/f //Wavelength (m) +d0 = sqrt(2*(4.0/3.0)*(a/1000.0))*(sqrt(tx_h)+sqrt(rx_h)) //Line of Sight (LOS) distance (km) +d = d0*1000 //LOS (m) +Er = (88*sqrt(tx_p)/(wave_lt*(d**2)))*tx_h*rx_h //Received signal strength (W) + +//Result +mprintf( "The Line of Sight distance is %.2f km",d0) +mprintf( "\nThe Received Signal strength is %.6f W", Er) + + + +//There is an error in the calculation of (88*sqrt(tx_p)/(wave_lt*(d**2))) where four orders of magnitude are ignored in the resulting calculation. |