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// Chapter 10 example 15
//------------------------------------------------------------------------------
clc;
clear;
//Given data
f = 10*10^9; // operating freq in Hz
c = 3*10^8; // vel. of EM waves in m/s
Ae = 2; // Antenna aperture in m
R = 10*10^3; // Target Range in m
// Calculations
lamda = c/f; // Wavelength in m
bw3db = lamda/2; // 3dB beamwidth in radian
Leff = bw3db * R; // effective length
Xs = (R*lamda)/(2*Leff); // Cross range resolution
// Output
mprintf('Effective Length = %d m\n',Leff);
mprintf('Cross range resolution = %d m',Xs);
//------------------------------------------------------------------------------
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