Source detection in the presence of nonuniform noise

Author

Aouada, Saïd ; Zoubir, Abdelhak M. ; See, Chong Meng Samson

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 source number estimation in the presence of unknown spatially nonuniform noise. Successive array element suppression is applied to isolate the contribution of the noise powers and a likelihood function is derived. When it is combined with the appropriately defined penalty function, a MDL-like criterion is defined. Performance of the new criterion is assessed through simulations and it is shown that the method is powerful in a nonuniform noise environment.

Keywords

array signal processing; covariance matrices; eigenvalues and eigenfunctions; interference suppression; maximum likelihood detection; maximum likelihood estimation; NU-MDL; array signal processing; covariance matrix transformation; eigenvalues; likelihood function; minimum description length; noise powers; nonuniform MDL criterion; penalty function; sensor array; source detection; source number estimation; successive array element suppression; unknown spatially nonuniform noise; Array signal processing; Covariance matrix; Detectors; Eigenvalues and eigenfunctions; Radar detection; Sensor arrays; Signal processing algorithms; Testing; Transmission line matrix methods; 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.2004.1326220

Filename

1326220