GSC Sentinel-2 PDGS STBD - emits - ESA

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GSC Sentinel-2 PDGS STBDIssue 1 Revision 2 (draft) - 25.07.2010GMES-GSEG-EOPG-TN-09-0031page 43 of 60Two more centres, the MPAC – Mission Performance Assessment Centre – and the PDMC– Payload Data Management Centre – have been identified in [RD-02] but their functionsare not further recalled here because these two centres have no significant role in thecurrent analysis of the circulated and archived data.The following table details de configuration of each centre in terms of implemented functions(processing, archiving), and the data circulated between centres.Centrereceptionfrom:Data-Circulationtransmission to:NominalProcessingOn-LineArchiveOff-Line(LTA)Data-Access(Server)CGS-1CGS-2CGS-3SatellitePAC-1(Level-0/1C)PAC-2(Level-0/1B)CGS-4 Satellite PAC-1 (Level-0)PAC-1PAC-2MPACCMCCGS-4(Level-0)CGS-1/2/3(Level-0/1C)PAC-2(Level-1B)CGS-1/2/3(Level-0/1B)PAC-1(Level-1C)CGS/PACs(Cal/ValLevel-0/1A/1B/1C)MetadataonlyPAC-2(Level-1C,CGS-4 Level-0/1B)PAC-1(CGS-1/2/3Level-1B)N/AESA UNCLASSIFIED – For Official UseLevel-0/1A/1B/1CLevel-0/1A/1Bfor 1 monthLevel-1C for1 monthLevel-0 Level-0 for 1monthLevel-1A/1B/1C+Reprocessing+HostedProcessingNoneLevel-1A/1B/1Climited forpurposeCGS-4Level-1A/1Bfor 1 monthLevel-1C for1 monthCloud freeglobal Level-1C for 1 yearLevel-0 for 3monthsEuropeLevel-1C for1 yearLevel-0/1A/1B/1Climited forpurpose© ESAThe copyright of this document is the property of ESA. It is supplied in confidence and shall not be reproduced, copied orcommunicated to any third party without written permission from ESA.N/AN/ALevel-0/1B/1C for12 yearsLevel-0/1B/1C for12 yearsN/AN/A None N/A NTable 6: Product-Data Circulation Archiving ScenarioIn this example CGS-4 is a CGS in light configuration and transmits to the PAC-1 all theLevel-0 products it generates for higher level production and products dissemination tousers.YNYYN
GSC Sentinel-2 PDGS STBDIssue 1 Revision 2 (draft) - 25.07.2010GMES-GSEG-EOPG-TN-09-0031page 44 of 60“Europe Level-1C” products comprise both cloudy and cloud-free tiles; considering thatEurope has a quite limited geographical extension and that it is the main target of themission, Level-1C products over Europe follow a dedicated archiving cycle and are then keptavailable to user for a longer period than other Level-1C products.The products associated to the average datastrip of 290km large and 6640km long have thedata volumes indicated in the following table:Type of productData Volume(GBytes)Level-0 57Level-1A 89,67Level-1B 87,07Level-1C 87,07Data volumes have been estimated assuming that:- All Level-1 products are compressed in JP2K lossless (image coded in average on7bits/pixel/band which means compression rate of 2.3);- Europe data are distributed across the 4 Core Ground Stations following the samepercentage of the overall onboard data downlink (shown in Figure 16 and estimated fromthe tables of [RD-04]).Data repartition over the 4 stations17%27%45% CGS-1CGS-2CGS-3CGS-411%Figure 16: distribution across the Core Ground Station of the overall downlinked dataESA UNCLASSIFIED – For Official Use© ESAThe copyright of this document is the property of ESA. It is supplied in confidence and shall not be reproduced, copied orcommunicated to any third party without written permission from ESA.
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