An Experimental Study of the Reflection of Underwater Sound from the Sea Surface.
Abstract
An experimental study of forward scattering of sound 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 signal coherence has been examined for a single hydrophone (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 such that the total average received power is conserved. This time-frequency theory describes the surface-scattering process sufficiently well to agree with the experimental results. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 15, 1974
- Accession Number
- AD0786011
Entities
People
- Willem Wijmans
Organizations
- SACLANT ASW Research Centre