www.pudn.com > programradarsystemdisign.zip > fig2_6b.m

% This program is used to produce Fig. 2.6b 
% It uses the function "improv_fac".  
clear all 
close all 
pfa1 = 1.0e-12; 
pfa2 = 1.0e-12; 
pfa3 = 1.0e-12; 
pfa4 = 1.0e-12; 
pd1 = .5; 
pd2 = .8; 
pd3 = .95; 
pd4 = .99; 
index = 0; 
for np = 1:1:1000 
    index = index+1; 
    I1 = improv_fac (np, pfa1, pd1); 
    i1 = 10.^(0.1*I1); 
    L1(index) = -1*10*log10(i1 ./ np); 
    I2 = improv_fac (np, pfa2, pd2); 
    i2 = 10.^(0.1*I2); 
    L2(index) = -1*10*log10(i2 ./ np); 
    I3 = improv_fac (np, pfa3, pd3); 
    i3 = 10.^(0.1*I3); 
    L3(index) = -1*10*log10(i3 ./ np); 
    I4 = improv_fac (np, pfa4, pd4); 
    i4 = 10.^(0.1*I4); 
    L4 (index) = -1*10*log10(i4 ./ np); 
end 
np = 1:1:1000; 
semilogx (np, L1, 'k', np, L2, 'k--', np, L3, 'k-.', np, L4, 'k:') 
axis tight 
xlabel ('Number of pulses'); 
ylabel ('Integration loss - dB') 
legend ('pd=.5, nfa=e+12','pd=.8, nfa=e+12','pd=.95, nfa=e+12','pd=.99, nfa=e+12'); 
grid