Physical Optics Approximations to Forward Scattering by Elastic Spherical Shells and Rigid/Soft Spheres

Abstract

Numerical results demonstrate that both Fraunhofer and Fresnel diffractions provide good approximations to forward scattering by elastic spherical shells and rigid/soft spheres, for non-dimensional frequency values 5 = or < ka = or < 40 and scattering angles 0 deg = or < 0 = or < 10 deg. The calculations were done for the far field, with incident plane waves. Signal processing, Classification, Antisubmarine warfare, Underwater acoustics.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1993
Accession Number
ADA275368

Entities

People

  • Jacob A George
  • Michael Werby

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Acoustic Scattering
  • Acoustic Waves
  • Acoustics
  • Diffraction
  • Far Field
  • Forward Scattering
  • Frequency
  • Fresnel Integrals
  • Integrals
  • Military Research
  • Numerical Integration
  • Observation Aircraft
  • Plane Waves
  • Scattering
  • Signal Processing
  • Underwater Acoustics
  • Waves

Fields of Study

  • Physics

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Maritime and Naval Warfare Studies
  • Structural Dynamics.