GSC Sentinel-2 PDGS OCD - Emits - ESA

GSC Sentinel-2 PDGS OCD
Issue 1 Revision 2 (draft) - 25.07.2010
GMES-GSEG-EOPG-TN-09-0008
page 62 of 350
Figure 3-7 Best-case daily OCP visibilities
It is however stressed that this level of EDRS usage via the OCP is at this stage totally
hypothetical as highly dependent on actual OCP capabilities with Sentinel-2 which are
currently being analysed. As currently stated in [RD-27], “The Sentinel-2 Laser
Communications Terminal 1 is a secondary payload for the evaluation of high speed data
communications by means of a laser link using a geostationary satellite as relay”. The
effective OCP capabilities, in particular regarding its operation constraints vis-à-vis MSI
operations, will be evaluated in-flight from which workable scenarios will derived and
potentially used operationally.
Nevertheless, specific mission operation scenarios have been derived based on the optimal
anticipated performance of OCP and EDRS in-flight.
3.8 Management
The overall management of the Sentinel-2 mission, including the space segment gradually
including Sentinel-2A then Sentinel-2B and the ground-segment including the FOS and the
PDGS will be led by the Sentinel-2 Mission Management Authority (MMA). As such, the MMA
will be globally responsible for the achievements of the overall mission requirements.
Regarding its relationship with the GSC and in particular vis-à-vis the DAP, it is assumed the
MMA represents a uniformed authority with the GSCDA on Sentinel-2 matters.
The MMA will centralise all decisions covering:
○ The definition and management of the High-Level Operation Plan (HLOP). During the
commissioning-phase of each spacecraft, the HLOP is superseded by the Sentinel-2
Commissioning-Plan (S2CP) defined for that spacecraft.
○ The fulfilment of the Data-Policy applicable to the Sentinel-2 mission data;
○ The coordinated management with the GSC authority of the DAP and its evolutions as
regarding Sentinel-2 contributions;
○ The definition and management of agreements with potential third-party operated
Local Ground-Stations (LGS) entitled to receive Sentinel-2 X-Band real-time data and
mirroring in the HLOP.
○ The definition of mission performance and quality baseline targets with respect to all
mission stakeholders.
Before the formal start of Phase-E2 of each Sentinel-2 spacecraft unit and in particular during
their commissioning-phase, the PDGS will be considered pre-operational only (cf. section
4.6.2) and will be dedicated to serving operationally the FOS and other specific stakeholders
according to the commissioning-plan requirements. The commissioning-plan relevant to the
Phase-E1 of one spacecraft unit will entirely supersede HLOP applicability for all mission
operations linked to that spacecraft during this phase.
1 Recently renamed Optical Communication Payload (OCP)
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