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//Chapter 23: Ground Wave Propagation
//Example 23-2.1
clc;
//Variable Initialization
f = 3e6 //Frequency (Hz)
sigma = 0.5 //Standard deviation of surface irregularities (unitless)
theta = 30 //Angle of incidence as measured from normal angle (degrees)
c = 3e8 //Speed of light (m/s)
//Calculations
wave_lt = c/f //Wavelength (m)
R = 4*%pi*sigma*sin(theta*%pi/180)/wave_lt //Roughness factor (unitless)
//Result
mprintf("The roughness factor is %.6f",R)
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