mti雷达参差比取不同的值对盲速的影响.m

MTI雷达（动目标检测雷达）能够抑制杂波保留目标信号

%%%%%%%%%%%%%%%%%%%  n1/n2取不同的值对盲速的影响
clc;
fofr=0.01:0.001:32;
fofr1=0.01:0.001:17;

a=63.0/64.0;         %%%%%%% n1/n2=63/64
a1=33.0/34.0;        %%%%%%% n1/n2=33/34
term1=(1-2.*cos(a*2*pi*fofr)+cos(4*pi*fofr)).^2;
term11=(1-2.*cos(a1*2*pi*fofr1)+cos(4*pi*fofr1)).^2;
term2=(-2*sin(a*2*pi*fofr)+sin(4*pi*fofr)).^2;
term22=(-2*sin(a1*2*pi*fofr1)+sin(4*pi*fofr1)).^2;

resp=.25.*sqrt(term1+term2);
resp1=.25.*sqrt(term11+term22);

resp=10.*log(resp);
resp1=10.*log(resp1);
subplot(2,1,1);
plot(fofr,resp,'r');
xlabel('盲速提高的倍率，n1/n2=63/64');
ylabel('Filter response(dB)');
axis([0 32 -40 0]);
grid;

subplot(2,1,2);
plot(fofr1,resp1);
xlabel('盲速提高的倍率，n1/n2=33/34');
ylabel('Filter response(dB)');
axis([0 17 -40 0]);
grid;