www.pudn.com > programradarsystemdisign.zip > fig2_11ab.m

% This program is used to produce Fig. 2.11a&b 
clear all 
pfa = 1e-11; 
nfa = log(2) / pfa; 
index = 0; 
for snr = -10:.5:30 
   index = index +1; 
   prob1(index) =  pd_swerling1 (nfa, 1, snr); 
   prob10(index) =  pd_swerling1 (nfa, 10, snr); 
   prob50(index) =  pd_swerling1 (nfa, 50, snr); 
   prob100(index) =  pd_swerling1 (nfa, 100, snr); 
end 
x = -10:.5:30; 
plot(x, prob1,'k',x,prob10,'k:',x,prob50,'k--', ... 
   x, prob100,'k-.'); 
axis([-10 30 0 1]) 
xlabel ('SNR - dB') 
ylabel ('Probability of detection') 
legend('np = 1','np = 10','np = 50','np = 100') 
grid