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Calculation of aerosol backscatter from airborne continuous wave focused CO2 Doppler lidar measurements. I - Algorithm descriptionSince 1981 the Royal Signals and Radar Establishment and the Royal Aircraft Establishment, United Kindom, have made vertical and horizontal sounding measurements of aerosol backscatter coefficients at 10.6 microns, using an airborne continuous-wave-focused CO2 Doppler lidar, the Laser True Airspeed System (LATAS). In this paper, the heterodyne signal from the LATAS detector is spectrally analyzed. Then, in conjunction with aircraft flight parameters, the data are processed in a six-stage computer algorithm: set search window, search for peak signal, test peak signal, measure total signal, calculate signal-to-noise ratio, and calculate backscatter coefficient.
Document ID
19910047176
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Rothermel, Jeffry
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Bowdle, David A.
(Alabama, University Huntsville, United States)
Vaughan, Michael
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Brown, Derek W.
(Royal Signals and Radar Establishment Malvern, United Kingdom)
Woodfield, Alan A.
(Royal Aircraft Establishment Flight Systems Div., Bedford, United Kingdom)
Date Acquired
August 14, 2013
Publication Date
March 20, 1991
Publication Information
Publication: Journal of Geophysical Research
Volume: 96
ISSN: 0148-0227
Subject Category
Geophysics
Accession Number
91A31799
Distribution Limits
Public
Copyright
Other

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