雷达LFM信号仿真

%雷达发射信号
A = 1;
B = 30e6;
fs = 2*B;
T = 10e-6;
k = B/T;
t = linspace(-T/2,T/2,T*fs);
s = A*exp(1j*pi*k*t.^2);
subplot(211);
plot(t,real(s));
ylabel("LFM信号实部");
xlabel("时间");
title("LFM信号的实部--时间图");
subplot(212);
F = linspace(-fs/2,fs/2,T*fs);
plot(F,fftshift(abs(fft((s)))));