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Proceedings Paper

Sentinel-1 C/D: modifications and enhancements
Author(s): Francisco Ceba Vega; Marie Touveneau; Paul Snoeij; Ignacio Navas-Traver; Jelle Poupaert; Steve Osborne; Mario Cossu; Svein Løkås; Ana García Hernández; Björn Rommen; David Bibby; Dirk Geudtner; Ramón Torres
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Paper Abstract

This manuscript presents the improvements implemented on the future Sentinel-1C/D spacecraft, which will eventually replace the current in-orbit Sentinel-1A/B satellites. Changes are based on the Sentinel-1A/B lessons learnt and on the addition of new functionalities to improve the system performance. More specifically, the modifications that will be covered in this paper are those that will enhance the performance of the mission. The addition of an Automatic Identification System (AIS) will provide ship position and identification while operating the SAR instrument. The Attitude and Orbit Control System (AOCS) will be upgraded to improve the pointing stability and to be compatible with the new Galileo signals. A novel mechanical bracket interfacing the SAR central panel and the platform has been designed to facilitate the disintegration during the re-entry. The propulsion system has also been modified to allow a faster orbit acquisition. The upgrades done on the SAR instrument to improve the radiometric stability will be also detailed.

Paper Details

Date Published: 25 September 2018
PDF: 6 pages
Proc. SPIE 10785, Sensors, Systems, and Next-Generation Satellites XXII, 107850E (25 September 2018); doi: 10.1117/12.2323657
Show Author Affiliations
Francisco Ceba Vega, European Space Agency (Netherlands)
Marie Touveneau, European Space Agency (Netherlands)
Paul Snoeij, European Space Agency (Netherlands)
Ignacio Navas-Traver, European Space Agency (Netherlands)
Jelle Poupaert, European Space Agency (Netherlands)
Steve Osborne, European Space Agency (Netherlands)
Mario Cossu, European Space Agency (Netherlands)
Svein Løkås, European Space Agency (Netherlands)
Ana García Hernández, European Space Agency (Netherlands)
Björn Rommen, European Space Agency (Netherlands)
David Bibby, European Space Agency (Netherlands)
Dirk Geudtner, European Space Agency (Netherlands)
Ramón Torres, European Space Agency (Netherlands)


Published in SPIE Proceedings Vol. 10785:
Sensors, Systems, and Next-Generation Satellites XXII
Steven P. Neeck; Philippe Martimort; Toshiyoshi Kimura, Editor(s)

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