Sentinel-1 C/D: modifications and enhancements

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

doi:10.1117/12.2323657

25 September 2018 Sentinel-1 C/D: modifications and enhancements

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

Author Affiliations +

Proceedings Volume 10785, Sensors, Systems, and Next-Generation Satellites XXII; 107850E (2018) https://doi.org/10.1117/12.2323657
Event: SPIE Remote Sensing, 2018, Berlin, Germany

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.

Citation Download Citation

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, and Ramón Torres "Sentinel-1 C/D: modifications and enhancements", Proc. SPIE 10785, Sensors, Systems, and Next-Generation Satellites XXII, 107850E (25 September 2018); https://doi.org/10.1117/12.2323657

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