使用PAST算法进行子空间分析，MUSIC算法进行频率估计，实现了对信号的频率跟踪-Using the PAST subspace analysis algorithm, MUSIC frequency estimation algorithm to achieve the signal frequency tracking

本程序运用PAST算法估计信号的子空间，MUSIC算法估计波达方向，实现了对信号的入射角度的实时跟踪。-The procedures used PAST algorithm estimates the signal subspace, the MUSIC algorithm to estimate DOA, real-time tracking of the incident angle of the signal.