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Proceedings Paper

Verification of the Sentinel-4 focal plane subsystem
Author(s): Christian Williges; Mathias Uhlig; Stefan Hilbert; Hannes Rossmann; Kevin Buchwinkler; Steffen Babben; Ilse Sebastian; Rüdiger Hohn; Ralf Reulke
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Paper Abstract

The Sentinel-4 payload is a multi-spectral camera system, designed to monitor atmospheric conditions over Europe from a geostationary orbit. The German Aerospace Center, DLR Berlin, conducted the verification campaign of the Focal Plane Subsystem (FPS) during the second half of 2016. The FPS consists, of two Focal Plane Assemblies (FPAs), two Front End Electronics (FEEs), one Front End Support Electronic (FSE) and one Instrument Control Unit (ICU). The FPAs are designed for two spectral ranges: UV-VIS (305 nm - 500 nm) and NIR (750 nm - 775 nm). In this publication, we will present in detail the set-up of the verification campaign of the Sentinel-4 Qualification Model (QM). This set up will also be used for the upcoming Flight Model (FM) verification, planned for early 2018. The FPAs have to be operated at 215 K ± 5 K, making it necessary to exploit a thermal vacuum chamber (TVC) for the test accomplishment. The test campaign consists mainly of radiometric tests. This publication focuses on the challenge to remotely illuminate both Sentinel-4 detectors as well as a reference detector homogeneously over a distance of approximately 1 m from outside the TVC. Selected test analyses and results will be presented.

Paper Details

Date Published: 5 September 2017
PDF: 12 pages
Proc. SPIE 10402, Earth Observing Systems XXII, 104021A (5 September 2017); doi: 10.1117/12.2274407
Show Author Affiliations
Christian Williges, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)
Mathias Uhlig, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)
Stefan Hilbert, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)
Hannes Rossmann, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)
Kevin Buchwinkler, Humboldt Univ. zu Berlin (Germany)
Steffen Babben, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)
Ilse Sebastian, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)
Rüdiger Hohn, Airbus Defence and Space (Germany)
Ralf Reulke, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)


Published in SPIE Proceedings Vol. 10402:
Earth Observing Systems XXII
James J. Butler; Xiaoxiong (Jack) Xiong; Xingfa Gu, Editor(s)

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