High resolution estimation of directions of arrival in nonuniform noise

Author

Zoubir, Abdelhak M. ; Aouada, Saïd

Author_Institution

Signal Process. Group, Darmstadt Univ. of Technol., Germany

Volume

2

fYear

2004

fDate

17-21 May 2004

Abstract

We consider the problem of direction of arrival estimation in the presence of unknown spatially nonuniform noise. A subspace separation approach is applied, based on successive array element elimination, to isolate the contribution of the noise powers. A high resolution estimator based on MUSIC is described for nonuniform noise. Performance of the estimator is assessed through simulations and is compared to the Cramer-Rao bound.

Keywords

array signal processing; covariance matrices; direction-of-arrival estimation; random noise; signal classification; source separation; Cramer-Rao bound; DOA estimation; MUSIC; covariance matrix; direction of arrival estimation; spatially nonuniform noise; subspace separation approach; successive array element elimination; Covariance matrix; Direction of arrival estimation; Eigenvalues and eigenfunctions; Maximum likelihood estimation; Multiple signal classification; Sensor arrays; Signal resolution; Signal to noise ratio; Spatial resolution; Working environment noise;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 2004. Proceedings. (ICASSP '04). IEEE International Conference on

ISSN

1520-6149

Print_ISBN

0-7803-8484-9

Type

conf

DOI

10.1109/ICASSP.2004.1326200

Filename

1326200