Computer Generated Matched Filters with Spatial Frequency Tailoring

Abstract

Computer generated Fourier transform matched filters have been constructed using e-beam lithography. These filters were then evaluated by placing them in a VanderLugt optical correlator and addressing them with the original scene used to make the filters. Results show that the spatial frequency content of a filter may be tailored so as to obtain good signal-to-noise correlations while maintaining high diffraction efficiency.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1989
Accession Number
ADA209786

Entities

People

  • Don A . Gregory
  • J. G. Duthie
  • Kevin Worchester
  • Larry Z. Kennedy

Organizations

  • United States Army Aviation and Missile Command

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Classification
  • Coding
  • Electrical Engineering
  • Electron Beam Lithography
  • Engineering
  • Filters
  • Filtration
  • Lithography
  • Matched Filters
  • Military Research
  • Numbers
  • Optical Correlators
  • Pattern Recognition
  • Photographs
  • Recognition
  • Security
  • Video Images

Readers

  • Image Processing and Computer Vision.
  • Pulsed Power and Plasma Physics.