Detection and identification of toxic air pollutants using airborne LWIR hyperspectral imaging

David J. Williams; Barry L. Feldman; Tim J. Williams; Drew Pilant; Paul G. Lucey; L. Dorsey Worthy

doi:10.1117/12.578819

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20 January 2005 Detection and identification of toxic air pollutants using airborne LWIR hyperspectral imaging

David J. Williams, Barry L. Feldman, Tim J. Williams, Drew Pilant, Paul G. Lucey, L. Dorsey Worthy

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Proceedings Volume 5655, Multispectral and Hyperspectral Remote Sensing Instruments and Applications II; (2005) https://doi.org/10.1117/12.578819
Event: Fourth International Asia-Pacific Environmental Remote Sensing Symposium 2004: Remote Sensing of the Atmosphere, Ocean, Environment, and Space, 2004, Honolulu, Hawai'i, United States

Abstract

Airborne longwave infrared (LWIR) hyperspectral imagery was utilized to detect and identify gaseous chemical release plumes at sites in southern Texas. The Airborne Hyperspectral Imager (AHI), developed by the University of Hawai’i, was flown over a petrochemical facility and a confined animal feeding operation on a modified DC-3 during April, 2004. Data collected by the AHI system was successfully used to detect and identify numerous plumes at both sites. Preliminary results indicate the presence of benzene and ammonia and several other organic compounds. Emissions were identified using regression analysis on atmospherically compensated data. Data validation was conducted using facility emission inventories. This technology has great promise for monitoring and inventorying facility emissions, and may be used as means to assist ground inspection teams to focus on actual fugitive emission points.

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David J. Williams, Barry L. Feldman, Tim J. Williams, Drew Pilant, Paul G. Lucey, and L. Dorsey Worthy "Detection and identification of toxic air pollutants using airborne LWIR hyperspectral imaging", Proc. SPIE 5655, Multispectral and Hyperspectral Remote Sensing Instruments and Applications II, (20 January 2005); https://doi.org/10.1117/12.578819

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