NDLI: Reduced variance distortionless response (RVDR) performance with signal mismatch

Content Provider	IEEE Xplore Digital Library
Author	Cox, H. Zeskind, R.M.
Copyright Year	1991
Description	Author affiliation: Orincon Corp., Arlington, VA, USA (Cox, H.)
Abstract	Matched field processing of underwater acoustic fields frequently involves considerable mismatch between the actual received signal and the model of the complicated propagation from various possible source locations to the receiving array. This leads to significant signal suppression in the MVDR (minimum variance distortionless response) processor. The high sidelobes of the conventional processor make it unsatisfactory. The authors examine the effectiveness of modifying the diagonal of the spatial correlation matrix. Performance in the face of mismatch is quantified. A simple parametric relationship between MUSIC, MVDR, and conventional beamforming is developed. An important feature of the proposed GDR (generalized distortionless response) approach is that the weights may be used in beamformers to produce beam output time series and are not limited to direction estimation.
Starting Page	825
Ending Page	829
File Size	261404
Page Count	5
File Format	PDF
ISBN	0818624701
ISSN	10586393
DOI	10.1109/ACSSC.1991.186562
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1991-11-04
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Signal processing Acoustic distortion Underwater acoustics Acoustic propagation Position measurement Array signal processing Protection Acoustic arrays Multiple signal classification Appropriate technology
Content Type	Text
Resource Type	Article
Subject	Signal Processing Computer Networks and Communications

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