ccovdemo1.m

经典《信号与系统》教程的matlab例程,对深入理解信号与系统相关概念有很大帮助

%==========================================================================
% Name：ccovdemo1
% The program demonstrate the convolution operation of two continuou-time signals
% please expressed the signals in terms of the unit step function.
% for example：e(t)=exp(-2*t).*u(t).
%==========================================================================
clear;close all;
t0=-4;%input('请输入信号的起始时间（建议取0—-10）：');
t1=4;%input('请输入信号的终止时间（建议取0—10）：');
p=.01;
t=t0:p:t1;
x=u(t)-u(t-1);%input('请输入激励信号：');
h=t.*(u(t)-u(t-2));%input('请输入系统冲激响应：');
f=p*conv(x,h);%卷积计算
f1=p*conv(fliplr(x),fliplr(h));

subplot(221)
plot(t,x)

subplot(222)
plot(t,h)

subplot(212)
t = 2*t0:p:2*t1;
plot(t,f)
hold on
plot(t,f1,'r')