Title :
Preliminary comparison between two spectral array pre-processors for wideband beamforming
Author :
Gasparini, Otello ; Camporeale, Claudio
Author_Institution :
Ingegneria dei Sistemi, DUNE, Rome, Italy
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;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1995. ICASSP-95., 1995 International Conference on
Conference_Location :
Detroit, MI
Print_ISBN :
0-7803-2431-5
DOI :
10.1109/ICASSP.1995.479753
