p207.m

天气雷达的地物杂波的模拟及其仿真

%program p207
Wp = 40/500; Ws = 150/500;
[n,Wn] = buttord(Wp,Ws,3,60)

[b,a] = butter(n,Wn);
freqz(b,a,512,1000); title('n=5 Butterworth Lowpass Filter')