GSC Sentinel-2 PDGS SRD - emits - ESA

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GSC Sentinel-2 PDGS SRD Issue 1 Revision 2 (draft) - 25.07.2010 GMES-GSEG-EOPG-RD-09-0028 page 32 of 204 3.2.2 SYSTEM CONTROL FUNCTIONS As primary goal, the System Control functions aim at providing the necessary means to control, monitor, assess, and fine tune the PDGS towards its goals and to mature its evolutions. The functional breakdown regarding system-control functions is depicted on Figure 3-3. Figure 3-3: PDGS System Control Functions It features a main mission control loop compiling three complementary functions: ○ A Mission Configuration and Control (MCC) function in charge of defining the operation scenario according to the HLOP and performing accurate control and coordination within the PDGS of all derived key mission configuration data and leverages on mission performance. It also aims at keeping a historical registry of mission configuration baselines associating all related operational monitoring data collected throughout the PDGS for performance assessment activities; ○ A Mission Planning (MPL) function in charge of applying the mission operation scenario by performing recurrent planning of the payload and data downlink operations through the FOS and triggering accordingly the data-reception activities at the CGS and LGS. 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.
ESA UNCLASSIFIED – For Official Use GSC Sentinel-2 PDGS SRD Issue 1 Revision 2 (draft) - 25.07.2010 GMES-GSEG-EOPG-RD-09-0028 page 33 of 204 ○ A Mission Performance Assessment (MPA) function in charge of measuring the actual PDGS performance and the mission overall quality with respect to the baseline, and retrofitting as relevant the necessary configuration changes to the MCC to meet the quality objectives. In addition, two complementary system-management support functions are identified: ○ A Reference Platform (RP) function globally in charge of system-level configuration control, system validation and transfer to operation activities as required for maintenance and evolutions throughout the PDGS operational lifetime; ○ A Monitoring and Control (M&C) function globally scattered and embedded across all functional domains and in charge of providing a central monitoring and control view in each PDGS centre over the centre processes and resources to support operational system-management activities; Finally, a Collaboration Support Service (CSS) function is provisioned for with the dual objective of providing technical support vis-à-vis the collaboration peers according to the needs of each type of collaboration, and liaising with the PDGS management for the definition of the collaborations and associated progress reporting during implementation. 3.2.3 DATA COMMUNICATION FUNCTIONS As primary goal, the Communication functions aim at providing the necessary means to effectively transport data internally and externally to the PDGS. As such, they enclose all physical communication means ranging from digital communication networks to standard post mail or telephone services allowing the transportation of information between geographically remote entities. This group of functions is hence supporting all other functions requiring physical data exchanges across PDGS centres or towards external interfaces. The following primary functions are identified as illustrated on Figure 3-4: ○ A Local Area Network (LAN) Function, responsible for all digital communications within every PDGS centre; ○ A Digital Circulation Network (DCN) Function, responsible for all digital communications between PDGS centres and expandable to support communications towards collaborative entities if required. This function extends to the EDRS data-repatriation capability composed of TX and RX stations to respectively transmit and receive the data via the EDRS repatriation transponder in multicast; ○ A Media Circulation Network (MCN) Function, responsible for all data communications via physical media between PDGS centres, and expandable to support communications towards collaborative entities if required. This function embeds the physical media transportation between remote sites, e.g. using post mail services; ○ A FOS Communication Network (FCN) Function, responsible for all digital communications between the PDGS and the Sentinel-2 FOS located at ESA/ESOC in Darmstadt (Germany); © 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.
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