Accession Number : AD0870497
Title : Coherent Reflection by the Rough Sea Surface of the Acoustic Field from a Source of Arbitrary Directivity.
Descriptive Note : Technical memo.,
Corporate Author : SACLANT ASW RESEARCH CENTRE LA SPEZIA (ITALY)
Personal Author(s) : Clarke, Richard H.
Report Date : 15 APR 1970
Pagination or Media Count : 25
Abstract : The angular plane-wave spectrum representation of the acoustic field due to a source of arbitrary directivity is used to formulate the problem of scattering by a rough sea surface. An approximate solution is obtained by applying a Kirchhoff-type boundary condition at the surface. The solution suggests a straightforward modification of current ray-tracing techniques in order to estimate the coherent part of the reflected field. (Author)
Descriptors : (*ACOUSTICS, REFLECTION), (*UNDERWATER SOUND, COHERENT RADIATION), (*SONAR SIGNALS, SCATTERING), REFLECTIVITY, SURFACE PROPERTIES, OCEAN WAVES, SCATTERING, INTERFACES, SOUND TRANSMISSION, SONAR PROJECTORS, SONAR RECEIVERS, RAYLEIGH SCATTERING.
Subject Categories : Acoustic Detection and Detectors
Distribution Statement : APPROVED FOR PUBLIC RELEASE