www.pudn.com > programradarsystemdisign.zip > fig2_2.m

% This program can be used tore-produce Figure 2.2 of text 
clear all 
close all 
xg = linspace(-6,6,1500); % randowm variable between -4 and 4 
xr = linspace(0,6,1500); % randowm variable between 0 and 8 
mu = 0; % zero mean Gaussain pdf mean 
sigma = 1.5; % standard deviation (sqrt(variance)  
ynorm = normpdf(xg,mu,sigma); % use MATLAB funtion normpdf 
yray = raylpdf(xr,sigma); % use MATLAB function raylpdf 
plot(xg,ynorm,'k',xr,yray,'k-.'); 
grid 
legend('Gaussian pdf','Rayleigh pdf') 
xlabel('x') 
ylabel('Probability density') 
gtext('\mu = 0; \sigma = 1.5') 
gtext('\sigma =1.5')