An Experimental Study of Forward Scattering and Reflection of Underwater Sound Waves from the Rough Sea Surface,

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)

Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1973
Accession Number
AD0770245

Entities

People

  • Willem Wijmans

Organizations

  • SACLANT ASW Research Centre

Tags

DTIC Thesaurus Topics

  • Acoustic Propagation
  • Acoustics
  • Arrays
  • Explosive Charges
  • Explosives
  • Forward Scattering
  • Grazing Angles
  • Hydrophones
  • Linear Arrays
  • Reflection
  • Roughness
  • Scattering
  • Sound Waves
  • Surface Roughness
  • Underwater Sound

Fields of Study

  • Physics

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Phased Array Antenna Design.
  • Wave Propagation and Nonlinear Chaotic Dynamics.