Research of Direct Position Determination in Coherent Signal Base on Improved MUSIC Algorithm
GUO Linpeng
QU Changwen
FENG Qi
PENG Yanbo
CHI Cheng
Abstract：The improved MUSIC algorithm is proposed to solve the problem that the ability to decline or even lose for coherent signal of MUSIC direct position determination. After the reconstruction of the source covariance conjugate,the direct position deter?mination of the coherent source is realized by means of the space spectrum search. The direct position determination based on im?proved MUSIC algorithm inherits and improved MUSIC algorithm's advantage of more accurate estimation of coherent source DOA, which can reduce the error of coherent source location while ensuring the accuracy of non-coherent source location. Simulation re?sults show that this method applies to direct position determination for coherent signal. And it performs better than classic MUSIC even under nearer the distance of signals,low-SNR or low-snap situation.
Keywords：direct position determinationcoherent signalimproved musiccovariance matrix
Publication Date：2019-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 48-51 )