Title :
High resolution wideband DOA estimation based on modified MUSIC algorithm
Author :
Zhou, Lin ; Zhao, Yong-jun ; Cui, Hao
Author_Institution :
Zhengzhou Inf. Sci. & Technol. Inst., Zhengzhou
Abstract :
A modified MUSIC algorithm for DOA estimation was proposed in this paper. It weighted the eigenvectors in the noise subspace which decreased the proportion of the eigenvectors of the bigger eigenvalues and increased the proportion of the eigenvectors of the smaller eigenvalues. This method adjusted the specific gravity of the eigenvectors in the spatial spectrum, and it reduced the influence of subspace expanding to MUSIC method in the nonideal instance. Then it was exerted to the wideband DOA estimating. It greatly improved the resolution of wideband DOA estimation. Simulation results verified the improvements of wideband DOA estimation by applying the modified MUSIC algorithm.
Keywords :
density; direction-of-arrival estimation; eigenvalues and eigenfunctions; eigenvalues; eigenvectors; modified MUSIC algorithm; specific gravity; subspace expanding; wideband DOA estimation; Covariance matrix; Direction of arrival estimation; Eigenvalues and eigenfunctions; Gravity; Matrix decomposition; Multiple signal classification; Signal processing; Signal processing algorithms; Signal resolution; Wideband; MUSIC algorithm; coherent signal-subspace method; direction-of-arrival;
Conference_Titel :
Information and Automation, 2008. ICIA 2008. International Conference on
Conference_Location :
Changsha
Print_ISBN :
978-1-4244-2183-1
Electronic_ISBN :
978-1-4244-2184-8
DOI :
10.1109/ICINFA.2008.4607961
