www.pudn.com > programradarsystemdisign.zip > fig4_5.m

% Use this program to reproduce Fig. 4.5 of tetxt 
close all 
clear all 
eps = 0.0001; 
taup = 1.; 
b =10.; 
up_down = 1.; 
x = lfm_ambg(taup, b, up_down); 
taux = -1.1*taup:.05:1.1*taup; 
fdy = -b:.05:b; 
figure(1) 
mesh(taux,fdy,x) 
xlabel ('Delay - seconds') 
ylabel ('Doppler - Hz') 
zlabel ('Ambiguity function') 
figure(2) 
contour(taux,fdy,x) 
xlabel ('Delay - seconds') 
ylabel ('Doppler - Hz') 
y = sqrt(x); 
figure(3) 
mesh(taux,fdy,y) 
xlabel ('Delay - seconds') 
ylabel ('Doppler - Hz') 
zlabel ('Uncertainty function') 
figure(4) 
contour(taux,fdy,y) 
xlabel ('Delay - seconds') 
ylabel ('Doppler - Hz')