Scattering by Water Waves Generated by a Moving Pressure Point

Abstract

An analysis for scattering of scalar waves in air by a wake on the surface of water is developed. The wake on the water surface is generated as a concentrated pressure point travels over the free water surface. The wake has characteristics resembling a diffraction grating. The grating produces maximum constructive interference (resonance) in the backscattered wave under certain conditions. At resonance the acoustic wavelength, water wavelength and angle of incident satisfy a simple geometrical condition.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1972
Accession Number
AD0749113

Entities

People

  • A. Q. Howard Jr.
  • G. A. Hufford
  • R. H. Ott

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Acoustic Waves
  • Amplitude
  • Boundaries
  • Boundary Value Problems
  • Communication Systems
  • Diffraction
  • Dissipation Factor
  • Equations
  • Gratings (Spectra)
  • New York
  • Observers
  • Resonance
  • Scattering
  • Standing Waves
  • Two Dimensional
  • Water Waves
  • Waves

Fields of Study

  • Physics

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Spectroscopy.