Matrix fitting approach to direction of arrival estimation with imperfect spatial coherence of wavefronts

Author

Gershman, Alex B. ; Mecklenbräuker, Christoph F. ; Böhme, Johann F.

Author_Institution

Signal Theory Group, Ruhr-Univ., Bochum, Germany

Volume

45

Issue

7

fYear

1997

fDate

7/1/1997 12:00:00 AM

Firstpage

1894

Lastpage

1899

Abstract

The performance of high-resolution direction of arrival (DOA) estimation methods significantly degrades in several practical situations where the wavefronts have imperfect spatial coherence. The original solution to this problem was proposed by Paulraj and Kailath (1988), but their technique requires a priori knowledge of the matrix characterizing the loss of wavefront coherence along the array aperture. A novel solution to this problem is proposed, which does not require a priori knowledge of the spatial coherence matrix

Keywords

array signal processing; coherence; direction-of-arrival estimation; matrix algebra; signal resolution; array aperture; direction of arrival estimation; high-resolution DOA estimation; imperfect spatial coherence; matrix fitting approach; wavefront coherence; wavefronts; Amplitude estimation; Apertures; Covariance matrix; Degradation; Direction of arrival estimation; Multiple signal classification; Phase estimation; Phased arrays; Sensor arrays; Spatial coherence;

fLanguage

English

Journal_Title

Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1053-587X

Type

jour

DOI

10.1109/78.599968

Filename

599968