A Hybrid-Iterative Approach for RCS Modeling on Super Computers

Abstract

An iterative method is developed for computing the current induced by plane wave excitation on conducting bodies of arbitrary shape. In this method, the scattering body is divided into lit- and shadow-side regions separated by the geometric optics boundary. An MFIE is written for each region. Each MFIE is solved by iteration (i.e., method of successive substitutions). In order to accomplish this, it is often necessary to have an initial estimate of the shadow side current. This estimate is obtained from edge diffraction theory or Fock theory. Hence, the method is called a hybrid-iterative method (HIM). The HIM is well-suited for use on a super computer like the Cray XMP. Results will be shown for 2-dimensional objects whose size varies from 0.6 wavelengths to 440 wavelengths, all with CPU times under one minute. Keywords: Magnetic field integral equations, Convergence, Wedges.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1988
Accession Number
ADA199349

Entities

People

  • G. A. Thiele
  • P. K. Murthy
  • R. P. Penno

Organizations

  • University of Dayton

Tags

DTIC Thesaurus Topics

  • Abstracts
  • Boundaries
  • Classification
  • Computers
  • Current Density
  • Diffraction
  • Equations
  • Geometry
  • Integral Equations
  • Integrals
  • Iterations
  • Magnetic Fields
  • Plane Waves
  • Scattering
  • Security
  • Two Dimensional
  • Waves

Fields of Study

  • Physics

Readers

  • Adaptive Control and Estimation with Uncertainty in Dynamic Systems.
  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Parallel and Distributed Computing.