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Performance and results from a space borne, uncooled microbolometer array spectral radiometric imager

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5 Author(s)
J. D. Spinhime ; NASA Goddard Space Flight Center, Greenbelt, MD, USA ; V. S. Scott ; R. S. Lancaster ; K. Manizade
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The Infrared Spectral Imaging Radiometer experiment was flown on a space shuttle mission as a shuttle hitchhiker experiment in August of 1997. The goals of the experiment were to test uncooled array detectors for infrared spectral imaging from space and for the first time retrieve brightness temperatures of cloud, land and sea along with direct laser measurements of cloud top height from a space platform. The instrument operates in 3 narrow and one broad spectral band, all between 7 and 13 microns in either stare or time-delay and integration mode. The nominal spatial resolution was ¼ kilometer. Using onboard calibrations along with periodic views of deep space, radiometric calibration of imagery was carried out and performance analyzed. The noise equivalent temperature difference and absolute accuracy reported varied with operating mode, spectral band and scene temperature but were within requirements. This paper provides a description of the instrument, its operating modes, the method of brightness temperature retrieval, the method of spectral registration and results from the flight

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Aerospace Conference Proceedings, 2000 IEEE  (Volume:3 )

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