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A survey of laser and selected optical systems for remote measurement of pollutant gas concentrationsApplications of the Differential Absorption Lidar (DIAL) technique to the remote sensing of pollutant gases are surveyed. In the DIAl technique, the differential absorption of two laser beams reflected back to a receiver from a target determines the concentration of the gas being studied. The types of instruments available are considered in detail: dye lidar (to measure nitrogen dioxide, sulfur dioxide, and ozone); carbon dioxide laser (for ozone, ethylene, ammonia, and hydrazine), helium-neon laser (for methane); hydrogen fluoride laser (for HF); and tunable diode laser (for nitric oxide and carbon monoxide). DIAL instruments are compared with other optical remote sensors such as Fourier-transform infrared spectrometers, correlation spectrometers (COSPEC and GASPEC), and grating spectrometers; and criteria for the selection of an appropriate gas measuring system are suggested. Laser and other optical remote sensors are found to be cost effective in many cases, despite the fact that they are more costly than point-monitoring systems.
Document ID
19830050377
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Grant, W. B.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Menzies, R. T.
(California Institute of Technology, Jet Propulsion Laboratory, Atmospheric Sciences Section, Pasadena CA, United States)
Date Acquired
August 11, 2013
Publication Date
March 1, 1983
Publication Information
Publication: Air Pollution Control Association, Journal
Volume: 33
ISSN: 0002-2470
Subject Category
Instrumentation And Photography
Accession Number
83A31595
Distribution Limits
Public
Copyright
Other

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