Laser Doppler Velocimeter Dual Scatter Probe Volume

Abstract

A further clarification of the volume from which data originate in the dual scatter laser Doppler velocimeter is presented. Several factors are noted that specify the primary dimensions of the probe volume which in some cases are totally specified by the collector optics. It was found experimentally that the lens aperture of the light collecting optics has a primary effect on the volume from which data originate. An equation is derived for reducing this data volume for both the on-axis and off-axis cases. Experimental verification is presented and compared to the derived equation.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1971
Accession Number
AD0727005

Entities

People

  • W. H. Goethert

Organizations

  • Arnold Engineering Development Complex

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Abstracts
  • Accumulators
  • Air Force
  • Amplitude
  • Analyzers
  • Curve Fitting
  • Diffraction
  • Doppler Effect
  • Equations
  • Laser Beams
  • Lasers
  • Measurement
  • Scattering
  • Spectra
  • Spectrum Analyzers
  • Velocimeters
  • Verification

Fields of Study

  • Physics

Readers

  • Aerosol Science/Aerosol Physics
  • Business Analytics
  • Electromagnetic Wave Scattering and Antenna Radiation Engineering

Technology Areas

  • Directed Energy