在信号DOA估计中，基于子空间旋转不变性的TLS-ESPRIT算法深受欢迎。文中首先介绍了TLS-ESPRIT算法并简要的对该算法进行分析。同时针对空间存在单信号和多信号两种情况，分析了影响TLS-ESPRIT算法精度的因素，主要讨论了入射角大小和空间存在多信号源对算法估计精度的影响，在计算机上进行了仿真研究，并得出结论。同时给出了提高TLS-ESPRIT算法适用范围，减小误差的有效方法。

The TLS-ESPRIT algorithm is the most popular one of the the DOA estimation of signals, We introduce the TLS-ESPRIT algorithm in the first place. Then we analyze it briefly. Meanwhile,we analyze the reasons which affecte the precision of the TLS-ESPRIT algorithm for single signal source and multiple signal sources in the place. The emphasis is placed on signal angle. The outcome in this paper is obtained through the simulation experiment. At the same time the method to improve estimation accuracy of the TLS - ESPRIT algorithm is presented.

TN957.2