Laser Doppler Shift Velocimeter

Abstract

Two different schemes for the laser doppler velocimeter are described and theoretically analyzed, a modified Mach-Zehnder velocimeter, and a modified Rayleigh velocimeter. Preliminary results obtained for the first scheme are shown and rather extensive results for the second scheme are presented. This latter method is shown to be capable under rather controlled conditions of obtaining speeds to well within 1%. Finally some results of a literature study concerning the use of laser doppler velocimetry as applied to the determination of the speed of wind tunnel flows are given.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1972
Accession Number
AD0740652

Entities

People

  • Faustin N. Weber Jr.

Organizations

  • Ballistic Research Laboratory

Tags

Communities of Interest

  • C4I
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Accuracy
  • Amplitude Modulation
  • Coordinate Systems
  • Doppler Effect
  • Electromagnetic Radiation
  • Frequency
  • Geometry
  • Laser Velocimeters
  • Measurement
  • Modulation
  • Observers
  • Radiation
  • Sampling
  • Scattering
  • Test Methods
  • Velocimeters
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Fluid Dynamics.
  • Optical Physics and Photonics.

Technology Areas

  • Directed Energy