Preliminary comparison between two spectral array pre-processors for wideband beamforming

Author

Gasparini, Otello ; Camporeale, Claudio

Author_Institution

Ingegneria dei Sistemi, DUNE, Rome, Italy

Volume

5

fYear

1995

fDate

9-12 May 1995

Firstpage

3551

Abstract

Wideband beamformers based on cross-spectral matrices between array elements are examined. Two methods to estimate such matrices are described, a standard one, the transform-and-correlate (TC) pre-processor, and a novel one, indicated as correlate-and-transform (CT) pre-processor, which should be considered on an equal base as the former. Applications of the CT are outlined in the estimation of correlated multipath, in acoustic Doppler current profiling, in interferometric seabed profiling and in the synthetic aperture sonar

Keywords

Doppler effect; acoustic wave interferometry; bathymetry; correlation methods; direction-of-arrival estimation; geophysical signal processing; matrix algebra; oceanographic techniques; sonar signal processing; spectral analysis; transforms; underwater sound; DOA estimation; acoustic Doppler current profiling; array elements; correlate-and-transform preprocessor; correlated multipath estimation; cross-spectral matrices; interferometric seabed profiling; spectral array preprocessors; synthetic aperture sonar; transform-and-correlate preprocessor; wideband beamformers; wideband beamforming; Acoustic applications; Array signal processing; Bandwidth; Direction of arrival estimation; Fourier transforms; Frequency estimation; Multiple signal classification; Parameter estimation; Performance evaluation; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1995. ICASSP-95., 1995 International Conference on

Conference_Location

Detroit, MI

ISSN

1520-6149

Print_ISBN

0-7803-2431-5

Type

conf

DOI

10.1109/ICASSP.1995.479753

Filename

479753