Numerical Simulation of Acoustic Scatter from Subsurface Bubble Clouds

Abstract

A new technique is described that allows computation of the scattering characteristics of an object near a rough surface in terms of the free-space scattering characteristics of the rough surface and the scattering object. The method is applied to the problem of acoustic scatter from a small bubble cloud below the ocean surface. The results show that under most conditions of interest the backscatter from the bubble cloud is enhanced over its free-spaced level. The ramifications for acoustic reverberation noise are discussed. Keywords: Underwater acoustics; Acoustic scattering; Numerical simulation; Rough surface scatter.

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Document Details

Document Type
Technical Report
Publication Date
Oct 18, 1989
Accession Number
ADA217068

Entities

People

  • C. L. Rino
  • Hoc D. Ngo

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Acoustic Waves
  • Acoustics
  • Backscattering
  • Computational Science
  • Delta Functions
  • Diffraction
  • Doppler Effect
  • Electromagnetic Fields
  • Electromagnetic Scattering
  • Energy Conservation
  • Forward Scattering
  • Geometry
  • Integral Equations
  • Perturbation Theory
  • Scattering
  • Three Dimensional
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Acoustical Oceanography.
  • Atmospheric Remote Sensing.
  • Electromagnetic Wave Scattering and Antenna Radiation Engineering

Technology Areas

  • Space