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Error Analysis of Wind Measurements for the University of Illinois Sodium Doppler Temperature SystemFour-frequency lidar measurements of temperature and wind velocity require accurate frequency tuning to an absolute reference and long term frequency stability. We quantify frequency tuning errors for the Illinois sodium system, to measure absolute frequencies and a reference interferometer to measure relative frequencies. To determine laser tuning errors, we monitor the vapor cell and interferometer during lidar data acquisition and analyze the two signals for variations as functions of time. Both sodium cell and interferometer are the same as those used to frequency tune the laser. By quantifying the frequency variations of the laser during data acquisition, an error analysis of temperature and wind measurements can be calculated. These error bounds determine the confidence in the calculated temperatures and wind velocities.
Document ID
19920020070
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Pfenninger, W. Matthew
(Illinois Univ. Urbana-Champaign, IL, United States)
Papen, George C.
(Illinois Univ. Urbana-Champaign, IL, United States)
Date Acquired
September 6, 2013
Publication Date
July 1, 1992
Publication Information
Publication: NASA. Langley Research Center, Sixteenth International Laser Radar Conference, Part 1
Subject Category
Meteorology And Climatology
Accession Number
92N29313
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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