多谐差相信号算法有着很高的辨识精度； 编写了一个基于多谐差相信号的一个算法仿真程序； 结果表明其有着很高的辨识精度。-Algorithm for multi-SPHS has a high identification accuracy the preparation of a multi-SPHS based on an algorithm for simulation program results show that the accuracy of their identifi