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dc.contributor.authorHolland, Charles W.
dc.contributor.authorHollett, Reginald D.
dc.contributor.authorTroiano, Luigi
dc.date.accessioned2018-10-11T14:09:00Z
dc.date.available2018-10-11T14:09:00Z
dc.date.issued1999/08
dc.identifier12386
dc.identifier.govdocSM-364
dc.identifier.urihttp://hdl.handle.net/20.500.12489/550
dc.description.abstractSonar performance predictions of reverberation in shallow water rely upon good estimates of the bottom scattering strength. However, little is understood about bottom scattering in shallow water in
dc.description.abstractthe frequency range 400 - 4000 Hz, particularly its dependency upon frequency and its relationship to
dc.description.abstractthe physical properties of the seafloor. In order to address these issues, new measurement
dc.description.abstracttechniques have been developed to probe the frequency and angular dependency of bottom scattering strength. The measurement techniques also appear to be capable of revealing the physical mechanisms that give rise to the scattering. Several experimental techniques will be described, including use of coherent and incoherent sources (lightbulbs). The general experimental approach is also described which includes auxiliary acoustic and geoacoustic measurements designed to allow
dc.description.abstractexploration of the relationship between bottom scattering and the physical properties of the bottom.
dc.description.abstractMeasurement and modeling results for two shallow water sites are presented. At one site, the scattering appeared to arise from at or near the water-sediment interface. At the other site, scattering from a 25 m sub-bottom horizon is clearly apparent in the data at and below 1800 Hz.
dc.formatvi, 35 p. : ill. ; 29 fig.
dc.languageEnglish
dc.publisherNATO. SACLANTCEN
dc.subjectAcoustic scattering - Seafloor and sea surface
dc.subjectShallow water
dc.subjectModelling and environmental measurements
dc.titleBottom scattering measurements in shallow water
dc.typeScientific Memorandum (SM)


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