Errors in the Measurement of Angle with a Laser Interferometer.

Abstract

It is shown that when a laser interferometer is used for general angle measurement, including the calibration of angle measuring instruments such as rotary tables, errors of 30 inches or more can occur unless great care is taken in the optical alignment. On the other hand, if the instrument is carefully aligned, an accuracy of + or - 14 degrees. The errors that occur are independent of the sensitivity of the interferometer system. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1979
Accession Number
ADA078048

Entities

People

  • David B. Prowse
  • Lilian M. Ramsay

Organizations

  • Defence Science and Technology Group

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Accuracy
  • Air Force
  • Australia
  • Calibration
  • Computer Programs
  • Department Of Defense
  • Engineering
  • Equations
  • Errors
  • Interferometers
  • Machine Tools
  • Materials
  • Measurement
  • Measuring Instruments
  • Reflectors
  • Retroreflectors
  • Sensitivity

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Inertial Navigation Systems.
  • Optical Physics and Photonics.

Technology Areas

  • Directed Energy