NDLI: Ocean acoustic field matching: normal mode filtering and non-Gaussian sources

Content Provider	IEEE Xplore Digital Library
Author	Hinich, M.J. Sheehan, J.H.
Copyright Year	1976
Abstract	Two qualitative results concerning statistical sonar signal processing and acoustic field matching are obtained. First, normal-mode field predictions are integrated with statistical signature analysis by constructing a boundary-value problem in the acoustic waveguide. From this construction it is found that the normal-mode filter is the unique acoustic preprocessor which does not confound deterministic waveguide correlation structure with stochastic source covariance structure. Second, the origin of deterministic, Gaussian, and non-Gaussian source signatures is investigated by associating physical parameters with the classical Lindeberg central limit conditions. From construction it is found that there are important objects that are not adequately represented either by infinitesimal points or by infinite surfaces. If receiver resolution is inadequate to resolve source complexity, these objects will exhibit a non-Gaussian acoustic signature via an entirely linear progression from internal excitation, to source radiation, through waveguide propagation, and finally to reception.<>
Sponsorship	IEEE Oceanic Engineering Society
Starting Page	181
Ending Page	188
Page Count	8
File Size	1125762
File Format	PDF
ISSN	03649059
Volume Number	18
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1993-07-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Oceans Matched filters Filtering Acoustic waves Acoustic waveguides Sonar Acoustic signal processing Stochastic processes Surface acoustic waves Sea surface
Content Type	Text
Resource Type	Article
Subject	Ocean Engineering Mechanical Engineering Electrical and Electronic Engineering

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