AN EXTENSION OF THE MODIFIED GEOMETRICAL OPTICS METHODS FOR RADAR CROSS SECTIONS OF DIELECTRIC BODIES.

Abstract

The radar cross section of a dielectric sphere whose relative dielectric constant is significantly greater than unity is computed by means of the modified geometrical optics method. A new technique is introduced for treating the on-axis, internally reflected ray for the regions where the geometrical optics approach fails. Numerical calculations are made for the sphere whose specific dielectric constant is equal to 2.592 (i.e., refractive index is equal to 1.61). The results compare favorably with those obtained from the boundary value solution. The contributions of the stationary rays are relatively large and the rapid oscillations in the region of larger radius are attributed to the multiple bounce stationary ray. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jan 15, 1964
Accession Number
AD0606092

Entities

People

  • L. Peters Jr.
  • T. Kawano

Organizations

  • Ohio State University

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Boundaries
  • Dielectric Permittivity
  • Optics
  • Oscillation
  • Physics
  • Radar Cross Sections
  • Refractive Index
  • Stationary

Fields of Study

  • Physics

Readers

  • Fluid Dynamics.
  • Materials Science and Engineering.
  • Radar Systems Engineering.