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

fYear

2009

fDate

23-25 July 2009

Firstpage

402

Lastpage

405

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ICCCAS.2009.5250418

Filename

5250418