Performance analysis of the modified 2-D MUSIC algorithm under the effect of the source number estimation Error
Zhu Guojun · Journal of Xidian University · 2007
Based on the problem that some unexpected peaks appear in the 2-D MUSIC spectrum when the source number is over estimated and some peaks of the 2-D MUSIC spectrum disappear when the source number is under-estimated.By combining the reducing-dimension technique with the ONE-DIMENSION NOISE SUB-SPACE algorithm,an modified 2-D MUSIC algorithm based on three orthogonal linear arrays is discussed in this paper.It could convert the complicated 2-D processing into three simple 1-D processings.This algorithm utilizes the 1-D DOA which is estimated by the three collateral linear arrays respectively.Computer simulation results indicate that the modified algorithm can give the DOA successfully under the situation of un-known source numbers.