Accession Number:

ADA209831

Title:

Creeping Ray Analysis of Resonance for Prolate Spheroid

Descriptive Note:

Interaction note 440

Corporate Author:

ARIZONA UNIV TUCSON DEPT OF ELECTRICAL AND COMPUTER ENGINEERING

Report Date:

1986-06-01

Pagination or Media Count:

26.0

Abstract:

A ray orbit resonance condition is postulated and shown to reproduce asymptotically the resonant frequencies of a prolate spheroid. The method uses local creeping rays associated with a smooth convex impedance surface. As expected, the method deteriorates for high aspect ratio spheroids where the tip radii of curvatures are electrically small. This work is an alternative approach to Howards earlier geometric treatment and gives the relation to creeping ray analysis. The theory provides impetus to the understanding of mode conversion and diffraction ray coupling near edges of such scatterers. Comparison of pole location, pole trajectories and layering is given.

Subject Categories:

  • Active and Passive Radar Detection and Equipment
  • Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE