Direction-of-Arrival Estimation in the Presence of Unknown Nonuniform Noise Fields

Author

Wu, Yuntao ; Hou, Chaohuan ; Liao, Guisheng ; Guo, Qinghua

Author_Institution

Integrated Digital Syst. Lab., Chinese Acad. of Sci., Beijing

Volume

31

Issue

2

fYear

2006

fDate

4/1/2006 12:00:00 AM

Firstpage

504

Lastpage

510

Abstract

A new method for estimating directions-of-arrival (DOA) of multiple spatial narrowband signals in the presence of spatially nonuniform independent sensor noise with unknown covariance is presented. An estimate of the colored noise-covariance matrix is given first. The received data for parameter estimation is then prewhitened using the estimated noise covariance, hence, overcoming the highly biased estimates. Furthermore, the performance improvement of standard MUSIC method is confirmed by computer simulations

Keywords

array signal processing; covariance matrices; direction-of-arrival estimation; noise; array signal processing; colored noise-covariance matrix; direction-of-arrival estimation; nonuniform noise; parameter estimation; spatial narrowband signals; standard MUSIC method; Array signal processing; Colored noise; Covariance matrix; Direction of arrival estimation; Gaussian noise; Multiple signal classification; Narrowband; Sensor arrays; Sparse matrices; Working environment noise; Array signal processing; direction-of-arrival (DOA) estimation; nonuniform noise;

fLanguage

English

Journal_Title

Oceanic Engineering, IEEE Journal of

Publisher

ieee

ISSN

0364-9059

Type

jour

DOI

10.1109/JOE.2006.875270

Filename

1707998