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Coherent Doppler Wind Lidar Technology for Space Based Wind Measurements Including SPARCLEIt has been over 30 years since coherent lidar systems first measured wind velocity, and over 20 years since the "ultimate application" of measuring Earth's winds from space was conceived. Coherent or heterodyne optical detection involves the combination (or mixing) of the returned optical field with a local oscillator (LO) laser's optical field on the optical detector. This detection technique yields the benefits of dramatically improved signal-to-noise ratios; insensitivity to detector noise, background light and multiply scattered light; reduction of the returned signal's dynamic range; and preservation of the optical signal spectrum for electronic and computer processing. (Note that lidar systems are also referred to as optical radar, laser radar, and LADAR systems.) Many individuals, agencies, and countries have pursued the goal of space-based wind measurements through technology development, experiments, field campaigns and studies.
Document ID
19990046247
Acquisition Source
Marshall Space Flight Center
Document Type
Reprint (Version printed in journal)
Authors
Kavaya, Michael J. (NASA Marshall Space Flight Center Huntsville, AL United States)
Singh, Upendra N. (NASA Marshall Space Flight Center Huntsville, AL United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1999
Subject Category
Instrumentation And Photography
Meeting Information
Meeting: Quantum Electronics and Laser Science
Location: Baltimore, MD
Country: United States
Start Date: May 23, 1999
End Date: May 28, 1999
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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