GSC Sentinel-2 PDGS SRD - emits - ESA

GSC Sentinel-2 PDGS SRD
Issue 1 Revision 2 (draft) - 25.07.2010
GMES-GSEG-EOPG-RD-09-0028
page 27 of 204
3 GMES SENTINEL-2 PDGS OVERVIEW
3.1 PDGS Context
The Sentinel-2 Ground-Segment (GS) is composed of the FOS and the PDGS. During
Phase-E1 of each satellite unit, the CNES centre in Toulouse (CNES/CST) will also be
considered an integral part of the Sentinel-2 GS as providing dedicated services onground
for commissioning the spacecrafts until the start of Phase-E2 operations.
The FOS is responsible for all flight operations of the Sentinel-2 spacecrafts including
satellite tasking, telecommanding and telemetry monitoring, flight dynamics monitoring
and orbit control. It will be operated at ESA’s European Space Operations Centre (ESOC)
in Darmstadt in Germany during the entire Sentinel-2 mission.
The PDGS is responsible for payload and downlink planning, data acquisition and
processing of the Sentinel-2 satellite data, while contributing to the overall monitoring of
the payload and platform in coordination with the FOS. The PDGS is a distributed groundsystem
including ground-stations, processing centres and embedding all additional thirdparty
centres falling in the scope of its responsibilities for Sentinel-2 (e.g. auxiliary data
providers).
The GSCDA system is not considered part of the Sentinel-2 mission GS as providing
multi-mission services within the GSC and as such is not strictly dedicated to Sentinel-2.
To meet its objectives the Sentinel-2 PDGS interfaces with:
○ The Sentinel-2 PDGS Operation Manager (POM) having the responsibility of the
overall performance, operations, and configuration of the PDGS;
○ The Sentinel-2 Users for access to and exploitation of the PDGS product archives.
The GMES Service Projects (GSPs) are a specific class of Sentinel-2 users.
○ Local Ground Stations (LGS) authorised through the HLOP for the Real-Time
reception of Sentinel-2 payload data through the X-Band direct downlink interface.
○ The Coordinated Data Access System (CDS) as the common GSC service
interface providing coordinated data-access and reporting versus GSPs.
○ The Sentinel-2 Flight Operations Segment (FOS) at ESA/ESOC as a working
interface with the PDGS for mission planning as well as stakeholder for the
operational exploitation of HKTM products generated by the PDGS.
○ The European Data Relay System (EDRS) for the coordination of space-to-ground
data-relay activities and ground-to-ground data broadcast interfaces to support the
PDGS internal data circulation or external dissemination to Users.
○ The Centre National d'Études Spatiales centre in Toulouse (CNES/CST) as a
working interface with the PDGS during the commissioning phase of the Sentinel-2
spacecrafts.
○ Collaborative entities having agreed specific partnerships with the POM. In the
frame of this document, the Collaborative entities are either third-party operated
ESA UNCLASSIFIED – For Official Use
© ESA
The copyright of this document is the property of ESA. It is supplied in confidence and shall not be reproduced, copied or
communicated to any third party without written permission from ESA.