www.pudn.com > programradarsystemdisign.zip > fig3_17.m

% use this program to reproduce Fig. 3.17 of text 
clear all 
close all 
nscat = 1; 
scat_range = 912; 
scat_rcs = 10; 
n =64; 
deltaf = 10e6; 
prf = 10e3; 
v = 15; 
rnote = 900, 
winid = 1; 
count = 0; 
for time = 0:.05:3 
    count = count +1; 
    hl = hrr_profile (nscat, scat_range, scat_rcs, n, deltaf, prf, v, rnote,winid); 
    array(count,:) = transpose(hl); 
    hl(1:end) = 0; 
    scat_range =  scat_range - 2 * n * v / prf; 
end 
figure (1) 
 numb = 2*256;% this number matches that used in hrr_profile.  
 delx_meter = 15 / numb; 
 xmeter = 0:delx_meter:15-delx_meter; 
 imagesc(xmeter, 0:0.05:4,array) 
 colormap(gray) 
ylabel ('Time in seconds') 
xlabel('Relative distance in meters')