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Proceedings Paper

The Sentinel-4 detectors: architecture and performance
Author(s): Michael P. Skegg; Markus Hermsen; Rüdiger Hohn; Christian Williges; Charles Woffinden; Yves Levillain; Ralf Reulke
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Paper Abstract

The Sentinel-4 instrument is an imaging spectrometer, developed by Airbus under ESA contract in the frame of the joint European Union (EU)/ESA COPERNICUS program. SENTINEL-4 will provide accurate measurements of trace gases from geostationary orbit, including key atmospheric constituents such as ozone, nitrogen dioxide, sulfur dioxide, formaldehyde, as well as aerosol and cloud properties. Key to achieving these atmospheric measurements are the two CCD detectors, covering the wavelengths in the ranges 305 nm to 500 nm (UVVIS) and 750 to 775 nm (NIR) respectively. The paper describes the architecture, and operation of these two CCD detectors, which have an unusually high full-well capacity and a very specific architecture and read-out sequence to match the requirements of the Sentinel- 4 instrument. The key performance aspects and their verification through measurement are presented, with a focus on an unusual, bi-modal dark signal generation rate observed during test.

Paper Details

Date Published: 5 September 2017
PDF: 8 pages
Proc. SPIE 10402, Earth Observing Systems XXII, 1040218 (5 September 2017); doi: 10.1117/12.2274362
Show Author Affiliations
Michael P. Skegg, Airbus Defence and Space (Germany)
Markus Hermsen, Airbus Defence and Space (Germany)
Rüdiger Hohn, Airbus Defence and Space (Germany)
Christian Williges, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)
Charles Woffinden, Teledyne e2v (United Kingdom)
Yves Levillain, European Space Research and Technology Ctr. (Netherlands)
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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