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+//Chapter-11 example 56
+//=============================================================================
+clc;
+clear;
+//input data
+f       = 9*10^9;       // operating freq. of radar in Hz
+Vo      = 3*10^8;       //vel of Em wave in m/s;
+fd      = 1000;         // doppler shift freq. in Hz
+
+//Calculations
+lamda   = Vo/f;        // Wavelength in m
+Vr      = lamda*fd/2;  // radial velocity of target
+
+//output
+mprintf('Radial velocity of target Vr = %3.2f m/s',Vr);
+
+//==============================================================================