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Proceedings Paper • Open Access

From SED HI concept to Pleiades FM detection unit measurements
Author(s): Christophe Renard; Didier Dantes; Claude Neveu; Jean-Luc Lamard; Matthieu Oudinot; Alex Materne

Paper Abstract

The first flight model PLEIADES high resolution instrument under Thales Alenia Space development, on behalf of CNES, is currently in integration and test phases.

Based on the SED HI detection unit concept, PLEIADES detection unit has been fully qualified before the integration at telescope level. The main radiometric performances have been measured on engineering and first flight models.

This paper presents the results of performances obtained on the both models. After a recall of the SED HI concept, the design and performances of the main elements (charge coupled detectors, focal plane and video processing unit), detection unit radiometric performances are presented and compared to the instrument specifications for the panchromatic and multispectral bands. The performances treated are the following:

- video signal characteristics,

- dark signal level and dark signal non uniformity,

- photo-response non uniformity,

- non linearity and differential non linearity,

- temporal and spatial noises regarding system definitions

PLEIADES detection unit allows tuning of different functions: reference and sampling time positioning, anti-blooming level, gain value, TDI line number. These parameters are presented with their associated criteria of optimisation to achieve system radiometric performances and their sensitivities on radiometric performances.

All the results of the measurements performed by Thales Alenia Space on the PLEIADES detection units demonstrate the high potential of the SED HI concept for Earth high resolution observation system allowing optimised performances at instrument and satellite levels.

Paper Details

Date Published: 21 November 2017
PDF: 9 pages
Proc. SPIE 10566, International Conference on Space Optics — ICSO 2008, 105662W (21 November 2017); doi: 10.1117/12.2308216
Show Author Affiliations
Christophe Renard, Thales Alenia Space (France)
Didier Dantes, Thales Alenia Space (France)
Claude Neveu, Thales Alenia Space (France)
Jean-Luc Lamard, Thales Alenia Space (France)
Matthieu Oudinot, Thales Alenia Space (France)
Alex Materne, Ctr. National d'Études Spatiales (France)

Published in SPIE Proceedings Vol. 10566:
International Conference on Space Optics — ICSO 2008
Josiane Costeraste; Errico Armandillo; Nikos Karafolas, Editor(s)

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