High-Frequency Reflection and Scattering of Sound by Ellipsoidally Embossed Surfaces

Abstract

Earlier results for coherent reflection and incoherent scattering by embossed rigid or free surfaces are applied to ellipsoidal bosses with axes large compared to wavelength. The asymptotic procedures used originally for circular cylinders and spheres, and, subsequently, for elliptic cylinders are generalized to triaxial ellipsoids, and results for the corresponding bosses are obtained by the image method. Illustrative curves for both isotropic and anisotropic surfaces exhibit the influences of boss shape and orientation on the coherent reflection coefficients and incoherent differential scattering cross sections per unit area with emphasis on forward-(specular) and backscattered effects. (jhd)

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1988
Accession Number
ADA222230

Entities

People

  • R. J. Lucas
  • V. Twersky

Organizations

  • University of Illinois at Chicago

Tags

Communities of Interest

  • Air Platforms
  • C4I

DTIC Thesaurus Topics

  • Acoustic Scattering
  • Backscattering
  • Coefficients
  • Diameters
  • Ellipsoids
  • Forward Scattering
  • Frequency
  • Geometry
  • Grazing
  • High Resolution
  • Incoherent Scattering
  • Measurement
  • Orientation (Direction)
  • Reflection
  • Scattering
  • Scattering Cross Sections
  • Shape

Fields of Study

  • Physics

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering