Accession Number:
AD0770245
Title:
An Experimental Study of Forward Scattering and Reflection of Underwater Sound Waves from the Rough Sea Surface,
Descriptive Note:
Corporate Author:
SACLANT ASW RESEARCH CENTRE LA SPEZIA (ITALY)
Personal Author(s):
Report Date:
1973-10-01
Pagination or Media Count:
37.0
Abstract:
An experimental study of forward scattering from a rough sea surface has been made using an explosive charge as a broadband sound source and a linear array of omnidirectional hydrophones as a receiver. Using the surface grazing angle of the incident sound and the sea surface roughness as parameters the amount of coherence has been examined for a surface reflection temporal coherence and for the signals from two hydrophones of the array spatial coherence. A simple theory has been used to guide the analysis. The surface scattering is assumed to consist of a coherent part and an additional incoherent part. This theory describes the surface scattering sufficiently well to agree with the experimental results. Author
Descriptors:
Subject Categories:
- Physical and Dynamic Oceanography
- Acoustic Detection and Detectors
- Acoustics