Enhanced forward/backward spatial filtering method for DOA estimation of narrowband coherent sources

Author

Delis, A. ; Papadopoulos, G.

Author_Institution

Dept. of Electr. Eng., Patras Univ., Greece

Volume

143

Issue

1

fYear

1996

fDate

2/1/1996 12:00:00 AM

Firstpage

10

Lastpage

16

Abstract

The forward-only filtering approach first suggested by A. Moghaddamjoo (1991) to estimate the direction of arrival (DOA) of narrowband coherent sources is further investigated. The authors propose and analyse an improved method based on the application of a suggested forward/backward spatial filtering scheme of an array vector. They show that this method significantly improves the signal resolution and they prove that their method requires fewer sensor elements than the other filtering approaches. The effectiveness of the proposed algorithm is also proved in the general case of a mixed source scene consisting of fully correlated (coherent) and partially correlated signals. Monte-Carlo simulation experimental results that confirm the analysis are presented as well

Keywords

Monte Carlo methods; direction-of-arrival estimation; filtering theory; signal resolution; spatial filters; DOA estimation; Monte-Carlo simulation; array vector; direction of arrival estimation; forward/backward spatial filtering; fully correlated signals; mixed source scene; narrowband coherent sources; partially correlated signals; sensor array; signal resolution;

fLanguage

English

Journal_Title

Radar, Sonar and Navigation, IEE Proceedings -

Publisher

iet

ISSN

1350-2395

Type

jour

DOI

10.1049/ip-rsn:19960322

Filename

487761