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A Low-Cost Miniaturized Laser Heterodyne Radiometer (Mini-LHR) for Near-ir Measurements of CO2 and CH4 in the Atmospheric ColumnThe miniaturized laser heterodyne radiometer (mini-LHR) is a ground-based passive variation of a laser heterodyne radiometer that uses sunlight to measure absorption of CO2 andCH4 in the infrared. Sunlight is collected using collimation optics mounted to an AERONET sun tracker, modulated with a fiber switch and mixed with infrared laser light in a fast photoreciever.The amplitude of the resultant RF (radio frequency) beat signal correlates with the concentration of the gas in the atmospheric column.
Document ID
20170002763
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
External Source(s)
doi:10.1364/CLEO_AT.2016.ATh3J.2
Authors
Steel, Emily Wilson (NASA Goddard Space Flight Center Greenbelt, MD United States)
Date Acquired
March 31, 2017
Publication Date
January 1, 2016
Publication Information
Publisher: OSA Publishing
ISBN: 978-1-943580-11-8
Subject Category
Geosciences (General)
Instrumentation And Photography
Report/Patent Number
GSFC-E-DAA-TN40881
Meeting Information
Meeting: Conference on Lasers and Electro-Optics Applications and Technology 2016
Location: San Jose, CA
Country: United States
Start Date: June 5, 2016
End Date: June 10, 2016
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Keywords
heterodyne radiometer (mini-LHR)

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