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Estimating the multipath structure of an underwater channel using a single vector sensor

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dc.contributor.authorFelisberto, P.
dc.contributor.authorRodríguez, O. C.
dc.contributor.authorJesus, S. M.
dc.date.accessioned2014-10-07T09:28:36Z
dc.date.available2014-10-07T09:28:36Z
dc.date.issued2011
dc.description.abstractThis paper aims at estimating the multipath structure of an underwater acoustic channel using a single vector sensor. The multipath structure of an underwater acoustic channel measured by a single hydrophone from broadband signals is used for source localization or environmental monitoring applying model based methods. Generally in a first step the relative delays between the different echoes impinging the hydrophone and their amplitudes are estimated, then those are compared with a propagation model outputs for a given set of input parameters. Usually this requires a number of time consuming propagation model runs and an optimization procedure. A vector sensor measures the pressure and the particle velocity, thus in addition to delays and amplitudes estimated by a hydrophone can potentially estimate the direction (azimuth and elevation) of the different echoes in an impulse response. This additional information can be used to significantly reduce the number of propagation model runs and simplify the optimization procedure. Although, the estimate of the azimuth is relatively straightforward using a single vector sensor, the estimate of the elevation of the different echoes is difficult due to the signal bandwidth, low amplitude of the latter arrivals or sensitivity to phase errors of available devices, among others. This paper discusses the estimates of the direction of individual echoes observed in impulse responses gathered during the Makai'05 sea trial in the context of single vector sensor model based localization (azimuth, range and depth).por
dc.identifier.citationP. FELISBERTO, O. RODRÍGUEZ and S.M. JESUS, "Estimating the multipath structure of an underwater channel using a single vector sensor" in Proceedings of Meetings on Acoustics (POMA) of the Acoustical Society of America.por
dc.identifier.issn1939-800X
dc.identifier.otherAUT: PFE00638; SJE00662;
dc.identifier.urihttp://hdl.handle.net/10400.1/5197
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherAcoustical Society of Americapor
dc.subjectMultipath structurepor
dc.subjectUnderwater acousticpor
dc.titleEstimating the multipath structure of an underwater channel using a single vector sensorpor
dc.typeconference object
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FEEA-ELC%2F104561%2F2008/PT
oaire.citation.titleProceedings of the Meetings on Acoustics (POMA) of the Acoustical Society of Americapor
oaire.fundingStream3599-PPCDT
person.familyNameFelisberto
person.familyNameRodríguez
person.familyNameJesus
person.givenNamePaulo
person.givenNameOrlando
person.givenNameSergio
person.identifier79549
person.identifier465112
person.identifier.ciencia-idD411-CBA8-85B8
person.identifier.ciencia-id8E12-528F-49E5
person.identifier.orcid0000-0001-7542-4332
person.identifier.orcid0000-0002-0375-1892
person.identifier.orcid0000-0002-6021-1761
person.identifier.ridM-9474-2013
person.identifier.ridO-6589-2015
person.identifier.scopus-author-id6508039890
person.identifier.scopus-author-id7103218936
person.identifier.scopus-author-id7003729485
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspor
rcaap.typeconferenceObjectpor
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