A Fast Algorithm for Computing Scattered Fields Using Physical Optics Equivalent Approximation in Half-Space

Abstract

In this report, a fast algorithm for computing scattered fields with the use of physical optics (PO) equivalent approximation in half-space is presented. The theoretical basis for the algorithm and the derivation of formulas used in the algorithm is presented. The algorithm is used to compute the radar cross sections (RCSs) of several objects. The RCS of the objects computed by the algorithm is compared with those that were computed with the method of moments (MOM). The results presented are found to be accurate when the target dimensions are greater than or equal to 2 lamba, where lamba denotes the wavelength. It is concluded that the PO algorithm presented in this report can be used for majority of applications as it captured all the salient features of the targets.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 2000
Accession Number
ADA380711

Entities

People

  • T. R. Damarla

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics
  • Sensors

DTIC Thesaurus Topics

  • Algorithms
  • Computational Complexity
  • Coordinate Systems
  • Current Density
  • Electric Fields
  • Engineering
  • Frequency
  • Geometry
  • Magnetic Fields
  • Method Of Moments
  • Military Research
  • Radar Cross Sections
  • Radiation
  • Scattering
  • Synthetic Aperture Radar
  • Target Recognition
  • Unexploded Ammunition

Fields of Study

  • Physics

Readers

  • Computer Vision.
  • Electromagnetic Wave Scattering and Antenna Radiation Engineering

Technology Areas

  • Space
  • Space - Space Objects