clear all
a=generateurca(1,12);
b=decalias(a,-29911);
d=colyes3(a,b);
dd=d;
fr=decalias(dd,-3)-decalias(dd,3);
frr=decalias(dd,-6)-decalias(dd,6);
ffr=decalias(dd,-4)-decalias(dd,4);
ffrr=decalias(dd,-1)-decalias(dd,1);
figure(1)
i=(-3289:8986)./12;
plot(i,fr,i,frr,i,ffr,i,ffrr,'LineWidth',2)
xlim([-2.6 2.6])
grid
title('code discriminator (BPSK) ','fontsize',14)
xlabel('Chip offset (chips)','fontsize',14)
ylabel('Amplitude (m)','fontsize',14)
legend('chip spacing= Tc ','chip spacing= 0.8Tc ','chip spacing= 0.5Tc ','chip spacing 0.2Tc ')