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//Chapter-11 example 37
//=============================================================================
clc;
clear;
//Given data
Pt = 500*10^3; // Peak pulse power in Watts
pt = 50; // peak power transmitted by beacon in watts
f = 2500*10^6; // Radar Operating frequency in Hz
lamda = 0.12; // wavelength in m
D = 64; // antenna diameter in m
BW = 5000; // Radar Bandwidth
Ab = 0.51;
k = 1.38*10^-23; // Boltzmann constant
F = 20 // Noise figure
Fb = 1.1 // Noise figure of beacon
To = 290; // Temperature in kelvin
//Calculations
Ar = (0.65*%pi*D*D)/4
Rmax = sqrt((Ar*Pt*Ab)/(lamda*lamda*k*To*BW*(F-1))); // Max tracking range of radar
Rmax1 = sqrt((Ar*pt*Ab)/(lamda*lamda*k*To*BW*(Fb-1))); // Max tracking range of radar if Fb = 1.1
//output
mprintf('Maximum Tracking Range of Radar is %3.3e Km\n Range of beacon if noise figure is 1.1 = %3.3e Km\n ',Rmax/1000,Rmax1/1000);
mprintf('Note: Calculation mistake in textbook in calculating Range of beacon\n instead of 1.36*10^9 km range is wrongly printed as 136*10^6 km')
//======================end of program==========================================
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