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Proceedings Paper

TIRCIS: thermal infrared compact imaging spectrometer for small satellite applications
Author(s): Robert Wright; Paul Lucey; Sarah Crites; Harold Garbeil; Mark Wood; Eric Pilger; Andrea Gabrieli; Casey Honniball
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Paper Abstract

Measurements of reflectance or emittance in tens of narrow, contiguous wavebands, allow for the derivation of laboratory quality spectra remotely, from which the chemical composition and physical properties of targets can be determined. Although spaceborne (e.g. EO-1 Hyperion) hyperspectral data in the 0.4-2.5 micron (VSWIR) region are available, the provision of equivalent data in the log-wave infrared has lagged behind, there being no currently operational high spatial resolution LWIR imaging spectrometer on orbit. TIRCIS (Thermal Infra-Red Compact Imaging Spectrometer), uses a Fabry-Perot interferometer, an uncooled microbolometer array, and push-broom scanning to acquire hyperspectral image data. Radiometric calibration is provided by blackbody targets while spectral calibration is achieved using monochromatic light sources. The instrument has a mass of <15 kg and dimensions of 53 cm × 25 cm ♦ 22 cm, and has been designed to be compatible with integration into a micro-satellite platform. (A precursor to this instrument was launched onboard a 55 kg microsatellite in October 2015). The optical design yields a 120 m ground sample size given an orbit of 500 km. Over the wavelength interval of 7.5 to 14 microns up to 50 spectral samples are possible. Measured signal-to-noise ratios range from peak values of 500:1 to 1500:1, for source temperature of 10 to 100°C.

Paper Details

Date Published: 19 October 2016
PDF: 7 pages
Proc. SPIE 10000, Sensors, Systems, and Next-Generation Satellites XX, 100000M (19 October 2016); doi: 10.1117/12.2241931
Show Author Affiliations
Robert Wright, Univ. of Hawai'i at Manoa (United States)
Paul Lucey, Univ. of Hawai'i at Manoa (United States)
Sarah Crites, Univ. of Hawai'i at Manoa (United States)
Harold Garbeil, Univ. of Hawai'i at Manoa (United States)
Mark Wood, Univ. of Hawai'i at Manoa (United States)
Eric Pilger, Univ. of Hawaii at Manoa (United States)
Andrea Gabrieli, Univ. of Hawai'i at Manoa (United States)
Casey Honniball, Univ. of Hawai'i at Manoa (United States)

Published in SPIE Proceedings Vol. 10000:
Sensors, Systems, and Next-Generation Satellites XX
Roland Meynart; Steven P. Neeck; Toshiyoshi Kimura, Editor(s)

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