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Proceedings Paper

First flights of a new airborne thermal infrared imaging spectrometer with high area coverage
Author(s): Jeffrey L. Hall; Richard H. Boucher; David J. Gutierrez; Steven J. Hansel; Brian P. Kasper; Eric R. Keim; Nery M. Moreno; Mark L. Polak; Mazaher G. Sivjee; David M. Tratt; David W. Warren
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Paper Abstract

A new airborne thermal infrared imaging spectrometer, "Mako", with 128 bands in the thermal infrared covering 7.8 to 13.4 microns, has recently completed its engineering flight trials. Results from these flights, which occurred in September 2010 and included two science flights, are presented. The new sensor flies in a Twin Otter aircraft and operates in a whiskbroom mode, giving it the ability to scan to ±40° around nadir. The sensor package is supported on a commercial 3-axis-stabilized mount which greatly reduces aircraft-induced pointing jitter. The internal optics and focal plane array are operated near liquid helium temperatures, which in conjunction with a fast f/1.25 spectrometer enables low noise performance despite the sensor's small (0.55 mrad) pixel size and the high frame rate needed to cover large whisk angles. Besides the large-area-coverage scan mode (20 km2 per minute at 2-meter GSD from 12,500 ft. AGL), the sensor features a scan mirror pitch capability that enables both a high-sensitivity mode (longer integration times using frame summing, covering a smaller spatial region) and a multiple-look mode (multiple looks at a smaller region in a single aircraft overpass, for discriminating plume motion, for example).

Paper Details

Date Published: 20 May 2011
PDF: 7 pages
Proc. SPIE 8012, Infrared Technology and Applications XXXVII, 801203 (20 May 2011); doi: 10.1117/12.884865
Show Author Affiliations
Jeffrey L. Hall, The Aerospace Corp. (United States)
Richard H. Boucher, The Aerospace Corp. (United States)
David J. Gutierrez, The Aerospace Corp. (United States)
Steven J. Hansel, The Aerospace Corp. (United States)
Brian P. Kasper, The Aerospace Corp. (United States)
Eric R. Keim, The Aerospace Corp. (United States)
Nery M. Moreno, The Aerospace Corp. (United States)
Mark L. Polak, The Aerospace Corp. (United States)
Mazaher G. Sivjee, The Aerospace Corp. (United States)
David M. Tratt, The Aerospace Corp. (United States)
David W. Warren, The Aerospace Corp. (United States)

Published in SPIE Proceedings Vol. 8012:
Infrared Technology and Applications XXXVII
Bjørn F. Andresen; Gabor F. Fulop; Paul R. Norton, Editor(s)

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