A Second-Order Conjugate Augmented MUSIC Algorithm for Direction Finding

Author

Liu, Jian ; Yu, Hongqi ; Huang, ZhiTao ; Zhou, Yiyu

Author_Institution

Sch. of Electron. Sci., Nat. Univ. of Defense Technol., Changsha

fYear

2006

fDate

16-19 Oct. 2006

Firstpage

1

Lastpage

4

Abstract

A new direction finding algorithm called second-order conjugate augmented MUSIC (SO-CAM) is proposed in this paper. The basic idea of SO-CAM is to use the conjugate augmented cross-correlation to derive the pseudo-data matrix from which the pseudo covariance matrix is constructed. Then the directions of arrivals (DOAs) of the signals are estimated by MUSIC algorithm. SO-CAM can resolve two times the number of DOAs when compared to MUSIC algorithm for uniform linear array (ULA). Moreover, simulation results show that the resolution performance of SO-CAM algorithm is better than MUSIC and MUSIC-like in small sample case

Keywords

array signal processing; correlation methods; covariance matrices; direction-of-arrival estimation; signal classification; DOA estimation; SO-CAM; ULA; cross-correlation; direction finding algorithm; directions-of-arrival; multiple signal classification; pseudocovariance matrix; pseudodata matrix; second-order conjugate augmented MUSIC; uniform linear array; CADCAM; Computer aided manufacturing; Covariance matrix; Direction of arrival estimation; Multiple signal classification; Sensor arrays; Sensor phenomena and characterization; Signal processing; Signal processing algorithms; Signal resolution; Array signal processing; MUSIC; aperture extension; direction finding;

fLanguage

English

Publisher

ieee

Conference_Titel

Radar, 2006. CIE '06. International Conference on

Conference_Location

Shanghai

Print_ISBN

0-7803-9582-4

Electronic_ISBN

0-7803-9583-2

Type

conf

DOI

10.1109/ICR.2006.343402

Filename

4148160