New development of a long linear array for 11.3- to 12.3-um Earth observation

Olivier Saint-Pe; Olivier Donnadieu; Robert Davancens; Zoran Sodnik; Roland Meynart; Jean-Paul Chamonal; Raymond Boch; Michel Vuillermet

doi:10.1117/12.331326

18 November 1998 New development of a long linear array for 11.3- to 12.3-um Earth observation

Olivier Saint-Pe, Olivier Donnadieu, Robert Davancens, Zoran Sodnik, Roland Meynart, Jean-Paul Chamonal, Raymond Boch, Michel Vuillermet

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Proceedings Volume 3437, Infrared Spaceborne Remote Sensing VI; (1998) https://doi.org/10.1117/12.331326
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1998, San Diego, CA, United States

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.

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Olivier Saint-Pe, Olivier Saint-Pe, Olivier Donnadieu, Olivier Donnadieu, Robert Davancens, Robert Davancens, Zoran Sodnik, Zoran Sodnik, Roland Meynart, Roland Meynart, Jean-Paul Chamonal, Jean-Paul Chamonal, Raymond Boch, Raymond Boch, Michel Vuillermet, Michel Vuillermet, "New development of a long linear array for 11.3- to 12.3-um Earth observation", Proc. SPIE 3437, Infrared Spaceborne Remote Sensing VI, (18 November 1998); doi: 10.1117/12.331326; https://doi.org/10.1117/12.331326

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