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//Chapter-11 example 58
//=============================================================================
clc;
clear;
//input data
f = 6*10^9; // operating freq. of radar in Hz
Vr = 600; // radial ve. of of aircraft in kmph
Vo = 3*10^8; //vel of Em wave in m/s;
//calculations
lamda = Vo/f; // Wavelength in m
Vr1 = Vr*5/18 // kmph to m/s conversion
fd = 2*Vr1/lamda; // Doppler shift freq, in Hz
V = Vr1*cos((45*%pi/180)) // vel in direction of radar if target direction changes by 45 deg
fd1 = 2*V/lamda ; //doppler shift freq. in Hz
//Output
mprintf('Doppler shift frequency fd = %3.2f KHz\n Doppler shift frequency if the target changes its direction by 45deg = %3.2f KHz',fd/1000,fd1/1000);
//==============================================================================
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