Analysis of Laser Turbulence Utilizing a Video Tape Recorder and Digital Storage Oscilloscope.

Abstract

The ability to measure and predict atmospheric turbulence affecting laser beam propagation is a major concern when considering military applications. Such a method using a telescope, high resolution television camera, video tape recorder, digital storage oscilloscope, and calculator system has been devised, tested and utilized. A laser beam signal is recorded on video tape for further processing. This signal is displayed, stored and digitized using a Tektronix 468 digital storage oscilloscope. The digitized signal is sent to a Hewlett-Packard 9825 computing system for Fourier transform analysis and determination of the refractive index structure constant, C(2,N). Several trials were conducted using He-Ne and Ga-As lasers. The results demonstrated good correlation with theoretical predictions as well as previously analyzed data. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1982
Accession Number
ADA127859

Entities

People

  • John Henry Connor Jr

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Advanced Electronics
  • C4I
  • Energy and Power Technologies
  • Materials and Manufacturing Processes
  • Weapons Technologies

DTIC Thesaurus Topics

  • Atmospheric Motion
  • Computer Programs
  • Computers
  • Electronic Equipment
  • High Resolution
  • Laser Beams
  • Lasers
  • Measurement
  • Military Applications
  • Optical Equipment
  • Recording Systems
  • Refractive Index
  • Tape Recorders
  • Tape Recording
  • Tapes
  • Television Cameras
  • Video Tapes

Fields of Study

  • Physics

Readers

  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.
  • Image Processing and Computer Vision.
  • Spectroscopy.

Technology Areas

  • Directed Energy
  • Space