A conjugate augmented approach to direction-of-arrival estimation

Author

Shan, Zhilong ; Yum, Tak-Shing P.

Author_Institution

Sch. of Comput., South China Normal Univ., Guangzhou, China

Volume

53

Issue

11

fYear

2005

Firstpage

4104

Lastpage

4109

Abstract

In this paper, we propose a new Direction-of-Arrival (DOA) estimator called Conjugate Augmented MUSIC (CAM). The basic idea of CAM is to use the second-order statistics of the received signals to get the conjugate steering matrix. This, together with the steering matrix, is used to find the fourth-order cumulants. From that the source directions are obtained using the MUSIC-like algorithm. CAM can resolve two times the number of directions when compared to MUSIC-like estimator. Moreover, simulation results show that the estimation capacity, angle resolution, immunity to noise, and the number of required snapshots are all better than MUSIC-like algorithm.

Keywords

array signal processing; direction-of-arrival estimation; higher order statistics; signal resolution; angle resolution; array signal processing; conjugate augmented MUSIC; conjugate augmented approach; conjugate steering matrix; direction-of-arrival estimation; estimation capacity; fourth-order cumultant; nonGaussian source; second-order statistics; Array signal processing; CADCAM; Computer aided manufacturing; Direction of arrival estimation; Multiple signal classification; Radar signal processing; Sensor arrays; Signal processing algorithms; Signal resolution; Statistics; Array signal processing; DOA; MUSIC-like estimator; fourth-order cumulants; non-Gaussian sources;

fLanguage

English

Journal_Title

Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1053-587X

Type

jour

DOI

10.1109/TSP.2005.857012

Filename

1519679