
Proceedings Paper
Trace gas detection and monitoring with the Digital Array Gas-correlation Radiometer (DAGR)Format | Member Price | Non-Member Price |
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Paper Abstract
We present the first results from a Digital Array Gas-correlation Radiometer (DAGR) prototype sensor, and discuss
applications in remote sensing of trace gases. The sensor concept is based on traditional and reliable Gas Filter
Correlation Radiometry (GFCR), but overcomes the limitations in solar backscatter applications. The DAGR sensor
design can be scaled to the size of a digital camera and is ideal for downlooking detection of gases in the boundary layer,
where solar backscatter measurements are needed to overcome the lack of thermal contrast in the IR. Ground-based
portable DAGR sensors can monitor carbon sequestration sites or industrial facilities. Aircraft or UAV deployment can
quickly survey large areas and are particularly well suited for gas leak detection or carbon monitoring. From space-based
platforms, Doppler modulation can be exploited to produce an extremely fine spectral resolution with effective
resolving power exceeding 100,000. Such space-based DAGR observations could provide near-global sensing of
climatically important species such as such as CO2, CO, CH4, O3 and N2O. Planetary science applications include
detection and mapping of biomarkers in the Martian atmosphere.
Paper Details
Date Published: 26 May 2011
PDF: 8 pages
Proc. SPIE 8024, Advanced Environmental, Chemical, and Biological Sensing Technologies VIII, 80240U (26 May 2011); doi: 10.1117/12.884507
Published in SPIE Proceedings Vol. 8024:
Advanced Environmental, Chemical, and Biological Sensing Technologies VIII
Tuan Vo-Dinh; Robert A. Lieberman; Günter Gauglitz, Editor(s)
PDF: 8 pages
Proc. SPIE 8024, Advanced Environmental, Chemical, and Biological Sensing Technologies VIII, 80240U (26 May 2011); doi: 10.1117/12.884507
Show Author Affiliations
Published in SPIE Proceedings Vol. 8024:
Advanced Environmental, Chemical, and Biological Sensing Technologies VIII
Tuan Vo-Dinh; Robert A. Lieberman; Günter Gauglitz, Editor(s)
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