Accession Number : ADA139116

Title :   Two Methods for Calculating the Physical Optics Field.

Descriptive Note : Memorandum rept. Oct 82-Sep 83,


Personal Author(s) : Gordon,W B

PDF Url : ADA139116

Report Date : 29 Feb 1984

Pagination or Media Count : 24

Abstract : In the theory of Physical Optics the field scattered by a curved reflecting surface S is represented by an integral whose numerical evaluation is difficult. Two methods for calculating this integral are discussed: A Monte Carlo method and the method by Facet Decomposition. The first is limited by round-off error whereas the second is limited by computer storage and CPU running time. The Facet Decomposition method is exact when S is flat, and is superior to the Monte Carlo method when S is only 'slightly curved' according to a certain criterion. (Author)

Descriptors :   *Numerical methods and procedures, *Computations, *Optics, Electromagnetic scattering, Monte Carlo method, Integrals, Numerical analysis, Error analysis, Decomposition, Curvature, Reflection, Surfaces

Subject Categories : Theoretical Mathematics

Distribution Statement : APPROVED FOR PUBLIC RELEASE