Truncation-Error Reduction in 2D Cylindrical/Spherical Near-Field Measurements

Abstract

We introduce a near-field to far-field transformation for two-dimensional cylindrical/spherical scanning that significantly reduces angular-truncation errors. After examining the limitations of the traditional multipole-based expansion of truncated scan data, we consider an alternative expansion based on Slepian functions and show how far-field values can be extracted from the resulting expansion coefficients. We compare the performance and computational cost of the new transformation with those of the traditional one.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 2010
Accession Number
ADA571052

Entities

People

  • Kristopher T. Kim

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics
  • Materials and Manufacturing Processes
  • Sensors

DTIC Thesaurus Topics

  • Air Force
  • Air Force Facilities
  • Air Force Research Laboratories
  • Base Closures
  • Coefficients
  • Eigenvalues
  • Electromagnetic Scattering
  • Equations
  • Far Field
  • Government Procurement
  • Governments
  • Measurement
  • Military Research
  • Near Field
  • Scanning
  • Truncation
  • Two Dimensional

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