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+//Chapter-11 example 53
+//=============================================================================
+clc;
+clear;
+//input data
+Pt = 500*10^3;//peal pulse power in watts
+Pmin = 1*10^-12;//minimum receivable power
+Ac   = 5;//area of capture in m^s
+RCS  = 20;//radar cross sectional area in m^2
+F    = 10*10^9;//radar operating frequency
+Vo   = 3*10^8;//vel of Em wave in m/s;
+lamda = 3*10^-2;//wavelength in cms
+
+//calculations
+
+Rmax = ((Pt*Ac*Ac*RCS)/(4*%pi*lamda*lamda*Pmin))^0.25;
+
+//output
+mprintf('Maximum Radar range of the Radar system is %g Kms',Rmax/1000);
+
+//==============end of the program=============================================