Bearing estimation using a perturbed linear array

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dc.contributorVirginia Tech. Department of Economicsen
dc.contributor.authorHinich, Melvin J.en
dc.contributor.departmentEconomicsen
dc.date.accessed2015-05-12en
dc.date.accessioned2015-05-26T20:30:30Zen
dc.date.available2015-05-26T20:30:30Zen
dc.date.issued1977-06en
dc.description.abstractA linear hydrophone array which is towed in the ocean is subject to snakelike bending. If the array is processed as if it was truly linear, the author has shown that the bending causes a deflection of the measured bearing of a fixed source from its true bearing relative to the array. This deflection results from patterned perturbations in the true sensor positions along the nominal array axis. As the perturbation pattern changes with the flexing of the array, the source appears to move around. A probability model of the perturbations is used in order to develop a theoretical solution to the question of how the space-time information gathered by the array is best used to measure source bearing. The method which is used to reduce the bending perturbation deflection of the bearing is to group the sensors into adjacent subarrays, process these arrays over short time slices, average the subarray bearings for each time period, and then to average the average over time. This averaging method significantly improves the bearing accuracy of the source when the array is bent according to the model.en
dc.format.extent5 pagesen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationHinich, M. J. (1977). Bearing Estimation Using a Perturbed Linear Array. Journal of the Acoustical Society of America, 61(6), 1540-1544. doi: 10.1121/1.381466en
dc.identifier.doihttps://doi.org/10.1121/1.381466en
dc.identifier.issn0001-4966en
dc.identifier.urihttp://hdl.handle.net/10919/52611en
dc.identifier.urlhttp://scitation.aip.org/content/asa/journal/jasa/61/6/10.1121/1.381466en
dc.language.isoen_USen
dc.publisherAcoustical Society of Americaen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectPerturbation methodsen
dc.subjectInformation and communication theoryen
dc.subjectMicrophonesen
dc.subjectOceansen
dc.subjectPerturbation theoryen
dc.titleBearing estimation using a perturbed linear arrayen
dc.title.serialJournal of the Acoustical Society of Americaen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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