On the Accuracy of a Numerical Integration Procedure for Computing Diffraction Fields Using Table-Look-Up.

Abstract

In this report we have analyzed the errors introduced by table-look-up when an electromagnetic diffraction integral is performed numerically. We have shown that, in order to keep the error of both the real and imaginary components to be less than epsilon, the required table should have at least K entries uniformily distributed within a 2 pi range K > or = 3.85/epsilon square root of N and N is the number of terms used for numerical integration. A numerical example is presented that confirms this prediction. (Author)

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Sep 16, 1982
Accession Number
ADA120564

Entities

People

  • James K. Hsiao

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Computations
  • Computer Programs
  • Computers
  • Diffraction
  • Digital Computers
  • Electromagnetic Fields
  • Errors
  • Fourier Transformation
  • Integrals
  • Numbers
  • Numerical Integration
  • Probability
  • Probability Density Functions
  • Radiation
  • Random Variables
  • Sampling
  • Scattering

Readers

  • Aquatic Ecology
  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)