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Proceedings Paper

New development of a long linear array for 11.3- to 12.3-um Earth observation
Author(s): Olivier Saint-Pe; Olivier Donnadieu; Robert Davancens; Zoran Sodnik; Roland Meynart; Jean-Paul Chamonal; Raymond Boch; Michel Vuillermet
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Paper Abstract

In the frame of technological preparation for scientific Earth observation programs, the European Space Agency (ESA) has undertaken breadboarding activities dedicated to high resolution thermal radiometer to be implemented on a Low Earth Orbit satellite. Based on the lessons learned during the previous breadboarding phase and taken into account the modification of instrument concept, a LWIR linear focal plane breadboard has been studied and developed for the 11.3 to 12.3 micrometer range. The breadboard is made of two 256 pixels 30 micrometer pitch HgCdTe modules mechanically butted and indirectly hybridized to four multiplexers. Due to image rotation at focal plane level, a linear topology has been selected for pixel arrangement. To achieve the required 0.1 K NEdT, the detector is operated at 55 K. The detector breadboard manufactured and pre characterized by LETI/LIR and SOFRADIR has been integrated in a dedicated test set-up at MMS. First results of the characterization will be presented, with particular emphasis about the dark current and its dispersion as a function of temperature, and the low frequency noise measurements.

Paper Details

Date Published: 18 November 1998
PDF: 12 pages
Proc. SPIE 3437, Infrared Spaceborne Remote Sensing VI, (18 November 1998); doi: 10.1117/12.331326
Show Author Affiliations
Olivier Saint-Pe, Matra Marconi Space (France)
Olivier Donnadieu, Matra Marconi Space (France)
Robert Davancens, Matra Marconi Space (France)
Zoran Sodnik, European Space Agency/ESTEC (Netherlands)
Roland Meynart, European Space Agency/ESTEC (Netherlands)
Jean-Paul Chamonal, CEA/LETI (France)
Raymond Boch, CEA/LETI (France)
Michel Vuillermet, SOFRADIR (France)

Published in SPIE Proceedings Vol. 3437:
Infrared Spaceborne Remote Sensing VI
Marija Strojnik; Bjorn F. Andresen, Editor(s)

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