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//Chapter-11 example 49
//=============================================================================
clc;
clear;
//Given data
f = 6*10^9; // Radar operating freq. in Hz
Vo = 3*10^8; // vel of EM wave m/s;
PRF = 1000; // pulse repetitive freq. in Hz
PW = 1.2*10^-6; // Pulse width in sec
DC = 10^-3; // Duty Cycle
Smin = 5*10^-12; // min. detectable signal
R = 60*10^3; // Max. Range in m
G = 4000; // power gain of antenna
Ae = 1 // effective area in m^2
RCS = 2 // Radar cross sec. in m^2
//Calculations
lamda = Vo/f; // Wavelength in m
PRT = PW/DC; // pulse repetitive time
PRF = 1/PRT; // Pulse repetitive freq.
Pt = ((Smin*(4*%pi*R*R)^2))/(Ae*G*RCS); //Peak power
Pav = Pt*DC; // average power
Runamb = Vo/(2*PRF); // Distance of the Target
RR = (Vo*PW)/2; // Range Resolution
//output
mprintf('Operating Wavelength = %g m\n PRT = %3.2f ms\n PRF = %3.1f Hz\n Peak power = %3.3f KW\n Average power = %3.3f Watts\n unambiguous range = %g Km\n Range Resolution = %g m',lamda,PRT*1000,PRF,Pt/1000,Pav,Runamb/1000,RR );
mprintf('\n Note: Calculation error in textbook for Pt and Pav');
//==============================================================================
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