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dc.contributor.advisorMedwin, Herman
dc.contributor.authorBall, Ernest Charles
dc.contributor.authorCarlson, John Algot
dc.dateJune 1967
dc.date.accessioned2012-08-29T23:28:11Z
dc.date.available2012-08-29T23:28:11Z
dc.date.issued1967-06
dc.identifier.urihttp://hdl.handle.net/10945/11549
dc.descriptionApproved for public release, distribution unlimiteden_US
dc.description.abstractAcoustic backscattering from a random rough water surface has been studied experimentally to test the application of two scattering theories, a statistical description and a resonance approach. The rough surface was created by wind agitation over an anechoic tank. The wave height distribution was measured with a resistive probe and the wave slope distribution by optical glitter detection using a photocell. The distributions of backscattered sound pressures were recorded for surface roughnesses and sound frequencies corresponding to a very wide range of roughness conditions. Both statistical and resonance theories have regions of applicability and regions where they fail to predict the backscatter. Backscattering may be considered to be due to these two mechanisms, since a summation of the predictions of the two theories fits the experimental data fairly well over the complete range of angles of incidence studied. A method of analysis is suggested to relate the doppler shifted continuous wave sound spectrum to the surface wave spectrum.en_US
dc.description.urihttp://www.archive.org/details/acousticbackscat00ball
dc.language.isoen_US
dc.publisherMonterey, California. U.S. Naval Postgraduate Schoolen_US
dc.rightsCopyright is reserved by the copyright owneren_US
dc.rightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. As such, it is in the public domain, and under the provisions of Title 17, United States Code, Section 105, may not be copyrighted.en_US
dc.titleAcoustic nackscatter from a random rough water surfaceen_US
dc.typeThesisen_US
dc.contributor.corporateNaval Postgraduate School
dc.contributor.departmentDepartment of Physics
dc.subject.authorScatteringen_US
dc.subject.authorBackscatteringen_US
dc.subject.authorAcoustic scatteringen_US
dc.subject.authorRough water surfaceen_US
dc.subject.authorWave height distributionen_US
dc.subject.authorWave slope distributionen_US
dc.subject.authorWave spectraen_US
dc.subject.authorSurface reverberationen_US
dc.subject.authorDoppler shiften_US
dc.description.serviceLieutenant Commander, Royal Canadian Navyen_US
dc.description.serviceLieutenant, United States Navyen_US
etd.thesisdegree.nameM.S. in Physicsen_US
etd.thesisdegree.levelMastersen_US
etd.thesisdegree.disciplinePhysicsen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US


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