Laser Doppler Velocimetry: Analytical Solutions of the Optical System Including the Effects of Partial Coherence of the Source,

Abstract

Within the framework of ABCD matrix theory, analytical expressions are derived for the time lagged covariance of a classical laser Doppler velocimetry system as a function of the laser spot size, the limiting aperture, and the measurement aperture size. Both partial and fully developed speckle are considered, as well as planar and rotating targets. Further, error estimates are presented that indicate how well one can determine the velocity, in practice, of both planar and rotating targets, and a comparison with time of flight velocimetry is given.

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Document Details

Document Type
Technical Report
Publication Date
Jan 15, 1995
Accession Number
ADA298018

Entities

People

  • H. T. Yura
  • L. Lading
  • S. G. Hanson

Organizations

  • The Aerospace Corporation

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Advanced Materials
  • Air Force
  • Chemical Reactions
  • Chemistry
  • Compound Semiconductors
  • Computer Programs
  • Detection
  • Detectors
  • Fluid Mechanics
  • Geometry
  • Intensity
  • Laser Spectroscopy
  • Materials
  • Materials Processing
  • Microelectromechanical Systems
  • Space Systems
  • Spectra

Fields of Study

  • Physics

Readers

  • Fluid Mechanics and Fluid Dynamics.
  • Optical Physics and Photonics.
  • Statistical inference.

Technology Areas

  • Directed Energy