中文说明：盲源分离中的二阶盲辨识方法识别模态参数~该程序只适用于正定和超定的程序，对于欠定情况并不适用。
English Description：
The second order blind identification method in blind source separation (BSS) is used to identify modal parameters. The program is only suitable for positive definite and over definite cases, but not for underdetermined cases.