www.pudn.com > programradarsystemdisign.zip > fig10_8.m

% Use this program to reproduce Fig. 1.8 in the text 
clear all 
close all 
tau = linspace(.25,10,500); 
taum = tau .* 1e-3; 
C_S = [30 20 10 0]; 
c_s = 10.^(C_S./10); 
for n = 1:size(C_S,2) 
    val1 = 1 / (1.81*sqrt(2*c_s(n))); 
    sigma(n,:) = val1 ./ taum; 
end 
figure (1) 
semilogy(tau,sigma(1,:),'k',tau,sigma(2,:),'k-- ',tau,sigma(3,:),'k-.', ... 
    tau,sigma(4,:),'k:'); 
xlabel('Pulsewidth in Milliseconds') 
ylabel('RMS thermal error in Hz') 
legend('30 dB C/S','20 dB C/S','10 dB C/S','0 dB C/S') 
grid