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Medium frequency (800-1600Hz) geoacoustic inversions with drifting sparse arrays during the MREA BP07 experiment

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dc.contributor.authorLegac, J. C.
dc.contributor.authorHermand, J.-P.
dc.contributor.authorJesus, S. M.
dc.date.accessioned2014-10-08T13:47:43Z
dc.date.available2014-10-08T13:47:43Z
dc.date.issued2008
dc.description.abstractIn order to evaluate properly the acoustic propagation characteristics in shallow water environments, it is well established that appropriate knowledge of the acoustic properties of the seabottom is required. In the last decade, full-field geoacoustic inversion techniques have been demonstrated to provide adequate methodologies to assess those properties. However, several of the developed techniques may suffer a lack of adequacy to the design of low-frequency active sonar systems (LFAS) for which the assessment of seabottom characteristics are drawn. For instance most matched-field inversion techniques demonstrated so far use acoustical signals at much lower frequencies than those of the sonar (few tens to hundreds Hertz to be compared to the 1-2 kHz range of standard LFAS). Furthermore, some of the techniques may be difficult to be handled in an â€oeoperationally relevant context― since they are based on relatively complex designed systems such as highly instrumented vertical line arrays spanning the whole water column. In this paper, we investigate the potentialities of medium frequency acoustical signals (800-1600 Hz) received at several ranges (from 1 km to 10 km) along a field of drifting sparse arrays eventually reduced to a couple of hydrophones or even a single one for spatial coherent geoacoustic inversion purposes. The experimental datasets of the Maritime Rapid Environmental Assessment BP’07 seatrials South of Elba Island in the Mediterranean Sea are used to support this study.por
dc.description.sponsorshipFCTpor
dc.description.sponsorshipPOCI, POSI, POCTI
dc.identifier.citationJ.C. LEGAC, J-P. HERMAND and S.M. JESUS, ''Medium frequency (800-1600Hz) geoacoustic inversions with drifting sparse arrays during the MREA/BP'07 experiment'' in Proceedings ACOUSTICS'08, Paris, France, June.por
dc.identifier.otherAUT: SJE00662;
dc.identifier.urihttp://hdl.handle.net/10400.1/5225
dc.language.isoengpor
dc.peerreviewednopor
dc.publisherSociété Française d'Acoustiquepor
dc.titleMedium frequency (800-1600Hz) geoacoustic inversions with drifting sparse arrays during the MREA BP07 experimentpor
dc.typelecture
dspace.entity.typePublication
oaire.citation.conferencePlaceParis, Françapor
oaire.citation.titleAcoustics' 08por
person.familyNameJesus
person.givenNameSergio
person.identifier.orcid0000-0002-6021-1761
person.identifier.scopus-author-id7003729485
rcaap.rightsopenAccesspor
rcaap.typelecturepor
relation.isAuthorOfPublicatione0226ece-3767-4beb-ab80-868e8897c14a
relation.isAuthorOfPublication.latestForDiscoverye0226ece-3767-4beb-ab80-868e8897c14a

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