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+//Chapter-11 example 55
+//=============================================================================
+clc;
+clear;
+//input data
+Pav  = 200;//average power in watts
+PRF  = 1000;//pulse repetitive frequency in Hz
+PW   = 1*10^-6;//pulse width in sec
+Pmin = 1*10^-12;//minimum receivable power
+Ac   = 10;//area of capture in m^s
+RCS  = 2;//radar cross sectional area in m^2
+Vo   = 3*10^8;//vel of Em wave in m/s;
+lamda = 0.1;//wavelength in cms
+
+//calculations
+F    = Vo/lamda;//operating frequency in hz
+Pt   = Pav/(PRF*PW);
+
+Rmax = ((Pt*Ac*Ac*RCS)/(4*%pi*lamda*lamda*Pmin))^0.25;
+
+//output
+mprintf('Operating frequency is %g Ghz\n Radar peak power is %g KW\n Maximum Radar range of the Radar system is %g Km\n',F/10^9,Pt/1000,Rmax/1000);
+
+//==============end of the program=============================================