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A laser velocimeter for remote wind sensing.A CW carbon dioxide laser Doppler radar has been developed and applied to remote measurement of atmospheric wind velocity and turbulence. The carbon dioxide laser illuminates residual particulate matter in the atmosphere. Radiation scattered by these particles is homodyned with a local oscillator to provide the Doppler signal. The performance of the instrument is verified by comparison of wind velocity data recorded simultaneously by the laser Doppler system and a cup-anemometer wind-vane system. All data comparisons indicate very close agreement of the two systems. Data inconsistencies are within the accuracy limitations of the conventional anemometer system. The range of the laser Doppler system during these tests was confined to approximately 30 m. Laser Doppler wind velocity data were observed at ranges exceeding 300 m; however, no conventional anemometer was set up at these ranges for data comparisons.
Document ID
19720039741
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Lawrence, T. R.
Wilson, D. J.
Craven, C. E.
(Lockheed Huntsville Research and Engineering Center Huntsville, Ala., United States)
Jones, I. P.
Huffaker, R. M.
(NASA Marshall Space Flight Center Huntsville, Ala., United States)
Thomson, J. A. L.
(Wayne State University Detroit, Mich., United States)
Date Acquired
August 6, 2013
Publication Date
March 1, 1972
Publication Information
Publication: Review of Scientific Instruments
Volume: 43
Subject Category
Instrumentation And Photography
Accession Number
72A23407
Funding Number(s)
CONTRACT_GRANT: NAS8-25921
Distribution Limits
Public
Copyright
Other

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