Comparison of a signal subspace tracking algorithm VIA LMS-type procedure with high resolution DOA estimation methods

Author

Valizadeh, Amir ; Karimi, Mahmood ; Farrokhrooz, Mehdi

Author_Institution

Dept. of Electr. Eng., Shiraz Univ., Shiraz

fYear

2007

fDate

12-15 Feb. 2007

Firstpage

1

Lastpage

4

Abstract

In this paper, we present some new investigations on a robust adaptive beamforming via LMS-type procedure which has been proposed recently. This beamformer self-corrects and tracks desired source location errors or variations regardless of the eigenstructure of the input correlation matrix and array shape. This algorithm and MUSIC show an identical asymptotic variance in localization for immobile sources, whereas for the mobile case, the former is more efficient. Simulations show the proper performance of the aforementioned algorithm for resolving targets in low SNR and even for few number of snapshots in comparison with other high resolution methods. Also surveys show its efficiency in tracking moving sources.

Keywords

array signal processing; direction-of-arrival estimation; least mean squares methods; signal classification; signal resolution; LMS-type procedure; MUSIC; adaptive beamforming; asymptotic variance; eigenstructure; high resolution DOA estimation methods; input correlation matrix; signal subspace tracking algorithm; source location; Array signal processing; Direction of arrival estimation; Multiple signal classification; Position measurement; Robustness; Sensor arrays; Shape; Signal processing algorithms; Signal resolution; Target tracking;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing and Its Applications, 2007. ISSPA 2007. 9th International Symposium on

Conference_Location

Sharjah

Print_ISBN

978-1-4244-0778-1

Electronic_ISBN

978-1-4244-1779-8

Type

conf

DOI

10.1109/ISSPA.2007.4555297

Filename

4555297