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Estimating bottom properties with a vector sensor array during the Makai 2005 experiment

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dc.contributor.authorSantos, P.
dc.contributor.authorFelisberto, P.
dc.contributor.authorJesus, S. M.
dc.date.accessioned2014-10-07T09:43:03Z
dc.date.available2014-10-07T09:43:03Z
dc.date.issued2007
dc.description.abstractNowadays, vector sensors which measure both acoustic pressure and particle velocity begin to be available in underwater acoustic systems, normally configured as vector sensor arrays (VSA). The spatial filtering capabilities of a VSA can be used, with advantage over traditional pressure only hydrophone arrays, for estimating acoustic field directionality as well as arrival times and spectral content, which could open up the possibility for its use in bottom properties' estimation. An additional motivation for this work is to test the possibility of using high frequency probe signals (say above 2 kHz) for reducing size and cost of actual sub bottom profilers and current geoacoustic inversion methods. This work studies the bottom related structure of the VSA acquired signals, regarding the emitted signal waveform, frequency band and source-receiver geometry in order to estimate bottom properties, specially bottom reflection coefficient characteristics. Such a system was used during the Makai 2005 experiment, off Kauai I., Hawai (USA) to receive precoded signals in a broad frequency band from 8 up to 14 kHz. The agreement between the observed and the modelled acoustic data is discussed and preliminary results on the bottom reflection estimation are presented.por
dc.description.sponsorshipThe authors would like to thank Paul Hursky at HLS Research for their help with the data used in this analysis, Bruce Abraham at Applied Physical Sciences for providing assistance with the data acquisition and Michael Porter, chief scientist for the Makai Experiment. The authors also thank Jerry Tarasek at Naval Surface Weapons Centre for the use of the vector sensor array used in this work. This work was supported by Fundação para a Ciência e a Tecnologia under programs POCI, POCTI and POSI.por
dc.identifier.citationP.J. SANTOS, P. FELISBERTO and S.M. JESUS, ``Estimating bottom properties with a Vector Sensor Array during the Makai 2005 experiment'', Martech Conference, Barcelona, Spain.por
dc.identifier.otherAUT: PFE00638; SJE00662; PJS01028;
dc.identifier.urihttp://hdl.handle.net/10400.1/5200
dc.language.isoengpor
dc.peerreviewedyespor
dc.subjectVector sensorpor
dc.subjectHigh frequency inversionpor
dc.subjectGeoacoustic propertiespor
dc.subjectReflection losspor
dc.titleEstimating bottom properties with a vector sensor array during the Makai 2005 experimentpor
dc.typeconference object
dspace.entity.typePublication
oaire.citation.conferencePlaceBarcelonapor
oaire.citation.titleMartech Conferencepor
person.familyNameJorge Maia dos Santos
person.familyNameFelisberto
person.familyNameJesus
person.givenNamePaulo
person.givenNamePaulo
person.givenNameSergio
person.identifier79549
person.identifier.ciencia-idF91F-B793-622A
person.identifier.ciencia-idD411-CBA8-85B8
person.identifier.orcid0000-0002-0400-3298
person.identifier.orcid0000-0001-7542-4332
person.identifier.orcid0000-0002-6021-1761
person.identifier.ridM-9474-2013
person.identifier.scopus-author-id55490343300
person.identifier.scopus-author-id6508039890
person.identifier.scopus-author-id7003729485
rcaap.rightsopenAccesspor
rcaap.typeconferenceObjectpor
relation.isAuthorOfPublication86c75c82-e755-44cb-abbc-4a63f4e7d52b
relation.isAuthorOfPublication6574c278-a803-4dbe-9140-4cd8272027db
relation.isAuthorOfPublicatione0226ece-3767-4beb-ab80-868e8897c14a
relation.isAuthorOfPublication.latestForDiscovery86c75c82-e755-44cb-abbc-4a63f4e7d52b

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