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+//Chapter-11 example 52
+//=============================================================================
+clc;
+clear;
+//input data
+Pt   = 1*10^6;         //peak pulse power in watts
+Pmin = 1*10^-12;       //minimum receivable power
+Ae   = 16;             //effective area in m^s
+RCS  = 4;              //radar cross sectional area in m^2
+F    = 9*10^9;         //radar operating frequency
+Vo   = 3*10^8;         //vel of Em wave in m/s;
+G    = 5000;           //Power gain of antenna
+
+//calculations
+
+Rmax = ((Pt*G*Ae*RCS)/(16*%pi*%pi*Pmin))^0.25;
+
+//output
+mprintf('Maximum Radar range of the Radar  is %g Kms',Rmax/1000);
+
+//==============end of the program=============================================