中文说明：DOA估计的算法，其中包括Music算法、空间平滑Music算法、Root-Music算法、ESPRIT算法MVDR（最小方差无失真）算法等，便于比较
English Description：
DOA estimation algorithms, including music algorithm, spatial smoothing MUSIC algorithm, root MUSIC algorithm, ESPRIT algorithm, MVDR (minimum variance distortion free) algorithm, are easy to compare