空间平滑MUSIC算法的相干信源DOA

DOA Estimation of Coherent Signal Sources Using Spatial Smoothing MUSIC Algorithms

DOA估计是阵列信号处理一个重要领域,其中MUSIC算法是经典的针对非相干信源的超分辨算法,但其针对完全相干的两个信源时,则完全失去分辨能力。因此进一步研究了空间平滑MUSIC相干源的超分辨算法,并在八元线阵,固定快拍的条件下,对各种算法进行仿真对比。

DOA estimation is an important part of array signal processing,and the MUSIC algorithm is a typical super-resolution algorithm widely used for DOA estimation of incoherent signal sources.However,the classic MUSIC algorithm cannot distinguish two signal sources which are completely coherent.In this paper,some another super-resolution algorithms,spatial smoothing MUSIC algorithms,are used for DOA estimation of coherent signal sources.In addition,performance of the spatial smoothing MUSIC algorithms are analyzed through simulation under the condition of eight-element linear array and fixed snapshot.