此matlab 程序主要是针对3部重频固定的雷达信号进行分选，针对许多程序中与原理图不合理的地方进行了修改，符合了原理，经仿真可以准确分选出3部雷达信号。(This matlab program is mainly used for sorting three fixed-frequency fixed radar signals. It is modified for many programs and places where the schematic diagram is unreasonable. It conforms to the principle, and three radar signals can be accurately sorted by simulation.)