p206.m

天气雷达的地物杂波的模拟及其仿真

%program p206
%lp2hp chebshev I
N=9;
Rp=10;
w=400*pi;
[z,p,k]=cheb1ap(N,Rp);
[b,a]=zp2tf(z,p,k);
%design analog highpass filter
[bt,at]=lp2hp(b,a,w1);
[h,w]=freqs(bt,at);
semilogy(w/pi,abs(h));
axis([0 3000 1e-8 1]);
xlabel('Freq.(pi)');
grid on