由于待提取的分量为直流分量，而干扰信号的频谱占据整个频带，本题将从零点、极点分布特性出发，利用所谓的零、极点累试方法进行滤波器的设计。-To be extracted as a result of the weight for the DC component, while the jamming signal spectrum occupies the entire frequency band, the title will be zero and pole distribution cha