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
      Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE