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//Chapter-11 example 63
//=============================================================================
clc;
clear;
//Given data
Pt = 2*10^6; //Peak power in Watts
G = 45; // antenna gain in dB
f = 6*10^9; // operating frequency
Te = 290; // effective temp in kelvin
SNRmin = 20; // min SNR in dB
PW = 0.2*10^-3 // pulse width in sec
F = 3; // Noise Figure
B = 10*10^3; // bandwidth in KHz
RCS = 0.1; // Radar cross section in m^2
K = 1.38*10^-23; // boltzman constant
Vo = 3*10^8; //vel of Em wave in m/s;
//antilog acalculations
G1 = 10^(45/10); // antilog conversion of gain
SNR = 10^(20/10); // antilog conversion of SNRmin
F1 = 10^(3/10); // antilog conversion of Noise Figure
lamda = Vo/f; //wavelength in m
Rmax = ((Pt*G1*G1*lamda*lamda*RCS)/((64*%pi*%pi*%pi)*(K*Te*B*F1*SNR)))^0.25;
//pt1 = 10*log10(Pt)
//lamda1 = 10*log10(lamda^2)
//G2 = 2*G
//KTB = 10*log10(K*Te*B)
//RCS1 = 10*log10(RCS)
//p = 10*log10((4*%pi)^3)
//R4max = [pt1+G1+lamda1+RCS1-p-KTB-F-SNRmin];
//Output
mprintf('Maximum Range of the Radar is %3.2f Km',Rmax/100);
mprintf('\n Note: Calculation error i Textbook in multiplying K*Te*B');
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