采用的是脉冲对消法，ICA（主分量分析）算法和程序，构成不同频率的调制信号，课程设计时编写的matlab程序代码，基于互功率谱的时延估计。- It uses a pulse of consumer law, ICA (Principal Component Analysis) algorithm and procedures, Constituting the modulated signals of different frequencies, Course designed to prepa