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dc.contributor.authorJagannathan, Srinivasan
dc.contributor.authorKüsel, Elizabeth T.
dc.contributor.authorRatilal, Purnima
dc.contributor.authorMakris, Nicholas
dc.date.accessioned2014-06-09T16:22:45Z
dc.date.available2014-06-09T16:22:45Z
dc.date.issued2012-08
dc.date.submitted2012-05
dc.identifier.issn00014966
dc.identifier.urihttp://hdl.handle.net/1721.1/87703
dc.description.abstractBistatic, long-range measurements of acoustic scattered returns from vertically extended, air-filled tubular targets were made during three distinct field experiments in fluctuating continental shelf waveguides. It is shown that SonarEquation estimates of mean target-scattered intensity lead to large errors, differing by an order of magnitude from both the measurements and waveguidescattering theory. The use of the Ingenito scatteringmodel is also shown to lead to significant errors in estimating mean target-scattered intensity in the field experiments because they were conducted in range-dependent ocean environments with large variations in sound speed structure over the depth of the targets, scenarios that violate basic assumptions of the Ingenito model. Green’s theorem based full-field modeling that describes scattering from vertically extended tubular targets in range-dependent oceanwaveguides by taking into account nonuniform sound speed structure over the target’s depth extent is shown to accurately describe the statistics of the targets’ scattered field in all three field experiments. Returns from the man-made targets are also shown to have a very different spectral dependence from the natural target-like clutter of the dominant fish schools observed, suggesting that judicious multi-frequency sensing may often provide a useful means of distinguishing fish from man-made targets.en_US
dc.description.sponsorshipUnited States. Office of Naval Researchen_US
dc.description.sponsorshipAlfred P. Sloan Foundationen_US
dc.description.sponsorshipNational Oceanographic Partnership Program (U.S.)en_US
dc.language.isoen_US
dc.publisherAmerican Institute of Physics/Acoustical Society of Americaen_US
dc.relation.isversionofhttp://dx.doi.org/10.1121/1.4726073en_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.sourceProf. Makris via Angie Locknaren_US
dc.titleScattering from extended targets in range-dependent fluctuating ocean-waveguides with clutter from theory and experimentsen_US
dc.typeArticleen_US
dc.identifier.citationJagannathan, Srinivasan, Elizabeth T. Küsel, Purnima Ratilal, and Nicholas C. Makris. “Scattering from Extended Targets in Range-Dependent Fluctuating Ocean-Waveguides with Clutter from Theory and Experiments.” The Journal of the Acoustical Society of America 132, no. 2 (2012): 680. © 2012 Acoustical Society of America.en_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciencesen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Mechanical Engineeringen_US
dc.contributor.approverMakris, Nicholasen_US
dc.contributor.mitauthorMakris, Nicholasen_US
dc.contributor.mitauthorJagannathan, Srinivasanen_US
dc.contributor.mitauthorRatilal, Purnimaen_US
dc.relation.journalJournal of the Acoustical Society of Americaen_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dspace.orderedauthorsJagannathan, Srinivasan; Küsel, Elizabeth T.; Ratilal, Purnima; Makris, Nicholas C.en_US
dc.identifier.orcidhttps://orcid.org/0000-0003-4369-296X
mit.licensePUBLISHER_POLICYen_US


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