Title :
Wideband direction of arrival estimation based on fourth-order cumulants
Author :
Liu, Dong ; Yang, Ling-Jun ; Wang, Ying-Quan
Author_Institution :
Command Acad. of Commun., PLA of China, Wuhan, China
Abstract :
Based on MUSIC (MUltiple SIgnal Classification) algorithm and CSM (Coherent Signal- subspace Method), a DOA estimation method of wideband signals has been proposed in this paper. At first, the output covariance matrix is formed based on the fourth-order cumulants using the relation between the fourth-order and the covariance. And then using the projector operator to form focusing matrix and estimate the DOA of wideband signals with focused covariance matrix and MUSIC algorithm.. This algorithm can suppress Gaussian noise to improve the precision of DOA estimation. It does not need pre-estimation of DOA in focusing processing to improve the speed of the algorithm.
Keywords :
Gaussian noise; array signal processing; covariance matrices; direction-of-arrival estimation; higher order statistics; interference suppression; signal classification; DOA estimation; Gaussian noise suppression; MUSIC algorithm; array signal processing; coherent signal-subspace method; fourth-order cumulant; multiple signal classification algorithm; output covariance matrix; projector operator; wideband direction-of-arrival estimation; Array signal processing; Covariance matrix; Direction of arrival estimation; Frequency; Gaussian noise; Multiple signal classification; Narrowband; Sensor arrays; Signal processing algorithms; Wideband;
Conference_Titel :
Communications, Circuits and Systems, 2009. ICCCAS 2009. International Conference on
Conference_Location :
Milpitas, CA
Print_ISBN :
978-1-4244-4886-9
Electronic_ISBN :
978-1-4244-4888-3
DOI :
10.1109/ICCCAS.2009.5250418
