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:

1970-04-15

Pagination or Media Count:

25.0

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