The article analyses the signal through the method of gaining instant frequency on the base of instant correlation,then we can make up a multicenter matching filter in the FPGA.

• 通过对信号进行基于瞬时自相关的瞬时频率提取的方法对中频信号进行分析、识别,然后可以在FP-GA内部构造一个多通道匹配滤波器对信号进行匹配。