基于解相干的MUSIC算法估计性能分析

摘要

MUSIC算法作为DOA估计的经典算法,在处理高度相关的信号时,算法性能急剧下降甚至完全失效.为了正确地估计出相干信号的DOA,就必须要对相干信号进行解相干.采用前/后向空间平滑技术与修正MUSIC算法是两种估计相关信号DOA的有效方法.通过算法仿真实验,证明了理论的正确性.%MUSIC is a classical algorithm for DOA cstimation. However, it is failure for coherent signals. In order to solve the problem of the DOA estimation of coherent signals, a decorrelation is needed for coherent signals. forward/backward spatial smoothing technique and MMUSIC are two efficient algorithms for resolving coherent signals. Simulation results are provided to verify the theoretical prediction.