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High frequency source localization in the Strait of Sicily

2001Book part Open access
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dc.contributor.authorSoares, C.
dc.contributor.authorSiderius, M.
dc.contributor.authorJesus, S. M.
dc.date.accessioned2014-10-08T12:48:03Z
dc.date.available2014-10-08T12:48:03Z
dc.date.issued2001
dc.description.abstractThe ADVENT'99 sea trial took place in the area of the Adventure Bank in the Strait of Sicily during May 1999, with the objective of testing matched-field processing (MFP) techniques. A 62 m aperture - 31 hydrophone vertical line array was deployed at 2, 5 and 10 km from an acoustic source. The source was emitting a series of multi-tone signals alternating with LFM sweeps in two frequency bands: 200-700 Hz and 800-1600 Hz. One of the most stringent impairments in MFP is the impact of missing or erroneous environmental information on the final source location estimate. This problem is known in the literature as model mismatch and is strongly frequency dependent. A number of MFP processors have been proposed to cope with inevitable model mismatch in real data. The approach taken in this paper includes a incoherent broadband conventional Bartlett processor used in a two step procedure: in the first step the data is pre-focused using genetic search where the environmental and geometric parameters are estimated and in the second step an exhaustive search is performed for source range and depth. This method showed to be effective up to 10 km range in the higher frequency band achieving a precise localization during the whole recording of the 5 km track, and most of the 10 km track. It is shown that the increasing MFP dependence on erroneous environmental information at high frequency and at longer ranges can only be accounted for by including a time dependent modelling of the water column sound speed profile.por
dc.description.sponsorshipThis work was partially supported under a Summer Research Assistant Grant at Saclantcen.por
dc.identifier.citationSoares, C.. Siderius, M. e Jesus, S.M. "High-frequency source localization in the Strait of Sicily " in OCEANS, 2001. MTS/IEEE Conference and Exhibition, 2001, vol. 4, pp. 2530-2535.por
dc.identifier.doihttp://dx.doi.org/10.1109/OCEANS.2001.968399
dc.identifier.isbn0-933957-28-9
dc.identifier.otherAUT: SNJ01266;
dc.identifier.urihttp://hdl.handle.net/10400.1/5218
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherIEEE Explorepor
dc.relation.publisherversionhttp://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=968399por
dc.subjectAcoustic arrayspor
dc.subjectAcoustic emissionpor
dc.subjectAcoustic testingpor
dc.subjectFrequency estimationpor
dc.subjectGeneticspor
dc.subjectOceanspor
dc.subjectParameter estimationpor
dc.subjectPerformance evaluationpor
dc.subjectPosition measurementpor
dc.subjectWater resourcespor
dc.titleHigh frequency source localization in the Strait of Sicilypor
dc.typebook part
dspace.entity.typePublication
oaire.citation.conferencePlaceHonolulupor
oaire.citation.endPage2535por
oaire.citation.startPage2530por
oaire.citation.titleOCEANS, 2001. MTS/IEEE Conference and Exhibitionpor
oaire.citation.volume4por
person.familyNameSOARES
person.familyNameJesus
person.givenNameCRISTIANO
person.givenNameSergio
person.identifier.orcid0000-0002-2789-8506
person.identifier.orcid0000-0002-6021-1761
person.identifier.scopus-author-id7003729485
rcaap.rightsopenAccesspor
rcaap.typebookPartpor
relation.isAuthorOfPublication21359474-b0e6-4d62-a0b1-fa87a750b1ca
relation.isAuthorOfPublicatione0226ece-3767-4beb-ab80-868e8897c14a
relation.isAuthorOfPublication.latestForDiscoverye0226ece-3767-4beb-ab80-868e8897c14a

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