Scattering from Objects Submerged in Unbounded and Bounded Oceans

Abstract

We present a study of scattering from objects in a free unbounded ocean and for objects near an interface and in a waveguide. Major emphasis is on results and discussion of theoretical development is limited to the essentials. An examination of backscattered echoes is presented for elastic targets. Angular distributions are examined for all target types, as well as environments, with the exception of objects in a waveguide. In a waveguide, beamforming techniques are most appropriate for detection of objects. We also examine rigid, soft, and elastic objects that are either spheroidal or cylindrical. Aspect ratios studied range from 3:1 to 24:1, and kL/2 ranges (k is wavenumber and L is the length of the object) are from 3 to 120. Keywords: Scattering; Acoustic scattering. Reprints.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1987
Accession Number
ADA204605

Entities

People

  • Michael F. Werby
  • Richard B. Evans

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Acoustic Scattering
  • Acoustic Waves
  • Acoustics
  • Aspect Ratio
  • Computational Fluid Dynamics
  • Computational Science
  • Differential Equations
  • Diffraction
  • Elastic Shells
  • Equations
  • Integral Equations
  • Nuclear Physics
  • Nuclear Reactions
  • Partial Differential Equations
  • Physics
  • Physics Laboratories
  • Scattering

Fields of Study

  • Physics

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering