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Proceedings Paper

Thermal infrared spectral imager for airborne science applications
Author(s): William R. Johnson; Simon J. Hook; Pantazis Mouroulis; Daniel W. Wilson; Sarath D. Gunapala; Cory J. Hill; Jason M. Mumolo; Vincent Realmuto; Bjorn T. Eng
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Paper Abstract

An airborne thermal hyperspectral imager is underdevelopment which utilizes the compact Dyson optical configuration and quantum well infrared photo detector (QWIP) focal plane array. The Dyson configuration uses a single monolithic prism-like grating design which allows for a high throughput instrument (F/1.6) with minimal ghosting, stray-light and large swath width. The configuration has the potential to be the optimal imaging spectroscopy solution unmanned aerial vehicles (UAV) due to its small form factor and relatively low power requirements. The planned instrument specifications are discussed as well as design trade-offs. Calibration testing results (noise equivalent temperature difference, spectral linearity and spectral bandwidth) and laboratory emissivity plots from samples are shown using an operational testbed unit which has similar specifications as the final airborne system. Field testing of the testbed unit was performed to acquire plots of emissivity for various known standard minerals (quartz). A comparison is made using data from the ASTER spectral library.

Paper Details

Date Published: 6 May 2009
PDF: 13 pages
Proc. SPIE 7298, Infrared Technology and Applications XXXV, 729802 (6 May 2009); doi: 10.1117/12.829083
Show Author Affiliations
William R. Johnson, Jet Propulsion Lab. (United States)
Simon J. Hook, Jet Propulsion Lab. (United States)
Pantazis Mouroulis, Jet Propulsion Lab. (United States)
Daniel W. Wilson, Jet Propulsion Lab. (United States)
Sarath D. Gunapala, Jet Propulsion Lab. (United States)
Cory J. Hill, Jet Propulsion Lab. (United States)
Jason M. Mumolo, Jet Propulsion Lab. (United States)
Vincent Realmuto, Jet Propulsion Lab. (United States)
Bjorn T. Eng, Jet Propulsion Lab. (United States)

Published in SPIE Proceedings Vol. 7298:
Infrared Technology and Applications XXXV
Bjørn F. Andresen; Gabor F. Fulop; Paul R. Norton, Editor(s)

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