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Proceedings Paper

Design of the infrared imaging chain for the PRISM hyperspectral imager
Author(s): Thierry Dartois; Muriel Giordanengo; Jean-Luc Ribet; Umberto Del Bello
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Paper Abstract

ALCATEL has recently studied an infrared imaging chain, in the frame of phase A studies for the Land Surface Processes and Interactions Mission (LSPIM), which was one of the four candidate Core Missions for the European Space Agency Earth Explorer Program. The LSPIM satellite carries a single optical payload named PRISM (Processes Research by an Imaging Space Mission). PRISM is a multispectral imager based on the push broom imaging principle, operating at approximately 679 km altitude with a NADIR swath of 50 km associated to a 50 m spatial resolution. The paper presented herewith summarizes the results of the IR imaging chains study: composed of two IR focal planes (SWIR and TIR) integrated in dedicated ALCATEL dewars (one for each FPA), two proximity electronic modules and a common analog processing unit delivering digital video data to the one board mass memory unit (MMU). The main specifications of the detectors and electronic units are presented, a baseline of the imaging chain architecture complying with the requirements is then proposed with the main achieved trades off. The concept and associated performances of cutting-edge cooling systems are also introduced in this paper.

Paper Details

Date Published: 15 December 2000
PDF: 14 pages
Proc. SPIE 4130, Infrared Technology and Applications XXVI, (15 December 2000); doi: 10.1117/12.409896
Show Author Affiliations
Thierry Dartois, Alcatel Space Industries (France)
Muriel Giordanengo, Alcatel Space Industries (France)
Jean-Luc Ribet, Alcatel Space Industries (France)
Umberto Del Bello, European Space Agency/ESTEC (Netherlands)

Published in SPIE Proceedings Vol. 4130:
Infrared Technology and Applications XXVI
Bjorn F. Andresen; Gabor F. Fulop; Marija Strojnik, Editor(s)

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