Optimized Differential Absorption Radiometer for Remote Sensing of Chemical Effluents
Applied Optics, Vol. 41, Issue 12, pp. 2263-2273 (2002)
http://dx.doi.org/10.1364/AO.41.002263
Acrobat PDF (183 KB)
Abstract
A differential absorption radiometer sensor that was optimized for near-perfect (~2%) correction of the absorption by ambient atmospheric species (e.g., water) is described. A target gas is detected remotely by its IR signature viewed through a bandpass filter centered at one of its strongest lines. A second radiometric measurement obtained through a bandpass filter centered at a frequency optimized to match the absorption by an atmospheric trace species (e.g., water vapor) at the sample filter frequency provides near-perfect correction for dominant background absorption effects. The net absorption (emission) by the target gas was obtained through subtraction of the reference signal of the second measurement from that of the target gas measurement. For multiple species detection, additional sample and reference filter pairs can be configured. Predictions show that detection of strong absorbers such as dimethyl methylphosphonate at an optical density below 100 mg/m2 is possible from distances of <6 km.
© 2002 Optical Society of America
[Optical Society of America ]
OCIS Codes
(010.1120) Atmospheric and oceanic optics : Air pollution monitoring
(040.1880) Detectors : Detection
(120.0280) Instrumentation, measurement, and metrology : Remote sensing and sensors
(120.1880) Instrumentation, measurement, and metrology : Detection
(120.5630) Instrumentation, measurement, and metrology : Radiometry
(280.1120) Remote sensing and sensors : Air pollution monitoring
Citation
Gabriel Laufer and Avishai Ben-David, "Optimized Differential Absorption Radiometer for Remote Sensing of Chemical Effluents," Appl. Opt. 41, 2263-2273 (2002)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-41-12-2263
You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
Related Journal Articles 
- Measurements of the Atmospheric Carbon Monoxide Column with a Ground-Based Length-Modulated Radiometer (AO)
- Dynamic Spectroscopic Measurements of the Temperature and Pressure Cycles in a MOPITT Pressure Modulator Cell (AO)
- Passive Remote Monitoring of Chemical Vapors by Differential Fourier-Transform Infrared Radiometry: Results at a Range of 1.5 km (AO)
- New model for the internal quantum efficiency of photodiodes based on photocurrent analysis (AO)
- Applicability of light-emitting diodes as light sources for active differential optical absorption spectroscopy measurements (AO)
Related Conference Papers
- Advanced Sounder Options for GOES-R and Beyond: The ABX
- Rare-Earth-Doped Fiber Lasers for Spectroscopic Trace- Gas Detection
- Photofragmentation Approaches for the Detection of Polyatomic Molecules
- Investigation of a Multi-Point Acetylene Sensing System Employing Dense Wavelength Division Multiplexers
- Pump-Probe Detection of Surface-Bound Organophosphonate Compounds
« Previous Article | Next Article »
OSA is a member of 