2012•Journal of Computer ApplicationsRequires access
2-D direction of arrival estimation based on signal correlation and modified MUSIC algorithm
Zhi Li
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Abstract
The coherent signal is widespread in the actual environment.Concerning the problem that traditional 2-D Direction Of Arrival(DOA) algorithm of Multiple Signal Classification(MUSIC) cannot process the coherent signal,the Modified MUSIC(MMUSIC) algorithm was used to realize the 2-D DOA estimation for the coherent imaginaries signal.The applied range of the modified MUSIC algorithm was extended from 1-D Uniform Linear Array(ULA) to 2-D centre-symmetric array,and it had been deduced by theory that bearing performance of MMUSIC algorithm was inversely proportional to the cosine value of phase difference.For two coherent signals of being separated by more than 4 degrees,the successful probability of the 2-D MMSUIC algorithm can be more than 90% in simulation experiments.