Optical Techniques for Surface Characterization.

Abstract

The available statistical analyses of laser speckle from smooth surfaces have been extended to account for the effect of anisotropic surfaces on the contrast and on the autocorrelation function. Experimental results are presented for comparison with the theoretical results. For rough surfaces, an experiment is proposed for remotely determining surface roughness by using two different illuminating angles. A significant aspect of the procedure is that photographic processing has been removed from the experiment so that the technique is of interest in radar applications. An extensive literature survey of methods for measuring correlation length is reported. The various techniques are classified into three categories, profilometric, optical, and photomicrographic. The most promising procedures are discussed and two techniques are recommended for laser radar research. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1976
Accession Number
ADA031076

Entities

People

  • Carl E. Halford
  • Charles W. Bray

Organizations

  • University of Memphis

Tags

Communities of Interest

  • Air Platforms
  • Materials and Manufacturing Processes
  • Weapons Technologies

DTIC Thesaurus Topics

  • Computers
  • Data Science
  • Detectors
  • Electrical Engineering
  • Far Field
  • Information Science
  • Laser Beams
  • Laser Radar
  • Lasers
  • Literature Surveys
  • Optical Correlators
  • Photographic Processing
  • Radiation
  • Roughness
  • Statistical Analysis
  • Surface Properties
  • Surface Roughness

Fields of Study

  • Physics

Readers

  • Radar Systems Engineering.
  • Systems Analysis and Design
  • Thin Film Deposition Science.

Technology Areas

  • Directed Energy