对波达方向进行估计，通过MUSIC算法估计波达方向，利用MATLAB进行仿真，构造出谱峰图，估计出入射信号的个数和方向，有效的估计出独立信号源的DOA-Estimation of DOA estimated by MUSIC DOA algorithms using MATLAB simulation constructed peak figure, it is estimated the number of signal out of shot and direction, effective