GSC Sentinel-2 PDGS OCD - Emits - ESA

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GSC Sentinel-2 PDGS OCD Issue 1 Revision 2 (draft) - 25.07.2010 GMES-GSEG-EOPG-TN-09-0008 page 246 of 350 Centre reception from: Data-Circulation transmission to: Nominal Processing On-Line Archive Off-Line (LTA) Data- Access (Server) CGS-1 CGS-2 CGS-3 Satellite PAC-1 (Level-0/1C) PAC-2 (Level-0/1B) CGS-4 Satellite PAC-1 (Level- 0) PAC-1 PAC-2 MPAC PDMC CGS-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/Val Level- 0/1A/1B/1C) Metadata only PAC-2 (Level-1C, CGS-4 Level- 1B) PAC-1 (CGS-1/2/3 Level-1B) N/A Level- 0/1A/1B/1C Level- 0/1A/1B for 1 month Level-1C for 1 month Level-0 Level-0 for 1 month Level-1A/1B/1C +Reprocessing +Hosted Processing None Level-1A/1B/1C limited for purpose CGS-4 Level-1A/1B for 1 month Level-1C for 1 month Cloud free global Level- 1C for 1 year Level-0 for 3 months Europe Level-1C for 1 year Level- 0/1A/1B/1C limited for purpose N/A N/A Level- 0/1B/1C for 12 years Level- 0/1B/1C for 12 years N/A N/A None N/A N Table 5-1 Baseline Operation Layout Configuration Y N Y Y N 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.
6 DETAILED OPERATIONS CONCEPTS GSC Sentinel-2 PDGS OCD Issue 1 Revision 2 (draft) - 25.07.2010 GMES-GSEG-EOPG-TN-09-0008 page 247 of 350 This chapter provides an outline of the operations concepts translated at the level of every macro Function of the PDGS according to the design breakdown defined in Chapter-5. For each Function, the operation constraints and scenarios are summarised highlighting across-function interactions. 6.1 Data Reception (DRX) Operations 6.1.1 OPERATION CONSTRAINTS The following operation constraints are identified for the DRX function: ○ The anticipated multi-Sentinels X-band data reception conflicts (cf. 4.3.10.4). ○ Sentinel-2 spacecraft constellation concurrent operations. 6.1.1.1 Multi-Sentinels X-band Data Reception Conflicts The DRX front-end processing sub-function will be designed and procured as multi-sentinel equipment that will be deployed in different data reception centres. Such centres can be shared with other sentinels missions and therefore data reception activities performed by other sentinels missions will constrain operations for the Sentinel-2 mission. 6.1.1.2 Sentinel-2 S/C Constellation Concurrent Operations The DRX function will be designed to cope with the S2A and S2B units concurrent operations. The DRX function will be able to manage concurrent operations typically the data reception from the S2A spacecraft data and the S2B data supply operations (from a previous pass) or vice-versa and concurrent data supply operations of both S2A and S2B (previous pass data). Concurrent S2A and S2B data acquisition activities over the same centre are not allowed. Simultaneous data acquisition of the S2A and S2B satellites is not possible ensured by the 180 degrees orbit shift foreseen between the two spacecrafts. The simultaneous operations for the both spacecrafts imply the independence per spacecraft on the data supply interface towards the data consumers (e.g. level-0 processing activities performed by the DPC function). This is to ensure that data supply activities performed for one spacecraft do not affect the data acquisition and pre-processing activities performed for the other one and vice-versa. In addition, it also implies that data supply activities of one spacecraft do not affect the same data supply activities of the other. Accordingly some separation at hardware level of specific subsystems responsible for data distribution activities will be required (e.g. interface servers, network interfaces, etc.). 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.
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[RD-33] Sentinel-2 MSI - Level 2A A
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LES LGS Land Equipped Sites Local G
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3.5.2 MULTI-SPECTRAL INSTRUMENT CHA
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Product- Type Identifier S2MSI0 S2M
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GSC Sentinel-2 PDGS OCD - Emits - ESA

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