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Proceedings Paper • Open Access

In-field and Out-of-field stray light analysis for the COPERNICUS Sentinel 4 instrument
Author(s): S. Grabarnik; G. Bazalgette Courrèges-Lacoste; C. Pachot; L. Gambicorti; R. Rivière; Stefan Riedl

Paper Abstract

Sentinel-4 is an imaging UVN (UV-VIS-NIR) spectrometer, developed by Airbus Defence and Space as prime contractor under ESA contract in the frame of the joint EU/ESA COPERNICUS program. The mission objective is the operational monitoring of trace gas concentrations for atmospheric chemistry and climate applications. Stray light, which is unwanted light captured by the detectors, is one of the major contributors to such important instrument performance metrics as absolute and relative spectral and spatial radiometric accuracies. Amongst the different sources of stray light, Out-of-Band stray light can not be corrected. It is thus important to ensure its impact is limited. The main scope of this paper is to describe the stray light simulations performed in the frame of the Sentinel-4 project: the models, analysis approach and the results. Also, the technical challenges faced in building the models and performing the analysis and the solutions found to solve them are presented.

Paper Details

Date Published: 12 July 2019
PDF: 12 pages
Proc. SPIE 11180, International Conference on Space Optics — ICSO 2018, 111802Q (12 July 2019); doi: 10.1117/12.2536017
Show Author Affiliations
S. Grabarnik, European Space Agency (Netherlands)
G. Bazalgette Courrèges-Lacoste, European Space Agency (Netherlands)
C. Pachot, European Space Agency (Netherlands)
L. Gambicorti, European Space Agency (Netherlands)
R. Rivière, Airbus Defence and Space GmbH (Germany)
Stefan Riedl, Airbus Defence and Space GmbH (Germany)


Published in SPIE Proceedings Vol. 11180:
International Conference on Space Optics — ICSO 2018
Zoran Sodnik; Nikos Karafolas; Bruno Cugny, Editor(s)

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