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 164 of 350 Activity or Milestone PDGS development Reference Configuration Deployed Configuration State S2A State S2B State S2A State S2B Remarks Development N/A PDGS is integrated on RP PDGS is deployed and PDGS IV&V Preliminary verified in its definite physical layout PDGS is pre-qualified for PDGS QR operating on the constellation Qualified Sentinel-2 Ground-Segment is OSV integrated and validated for pre-operations GS-AR validated Qualified OSV excludes SVTs for S2B ORR S2A launch S2A Phase-E1 S2A IOCR & PDGS AR Delta-S2B IV&V dry-runs completed S2B HW deployment & delta-S2B IV&V Delta-S2B PDGS- QR Delta-S2B OSV Delta-S2B GS-AR Delta-S2B ORR S2B launch S2B Phase-E1 S2B IOCR reference-qualified S2B specific deltadevelopment referencequalified development reference-qualified preoperational N/A Ground-segment configuration is frozen until S2A launch. From now on, PDGS state for S2B is assumed by not formally qualified. S2A commissioning is performed while PDGS is validated for full operation Mission enters Phase-E2 with S2A Specific S2B updates are integrated on RP. RP still maintains reference-qualified configuration deployed in operations S2B updates are referencequalified on RP operational preliminary PDGS hardware is upgraded to support S2B while PDGS is in full operations for S2A PDGS is qualified for Qualified operating on the constellation OSV non-regression and S2B specific SVTs are performed Sentinel-2 ground-segment is validated validated for pre-operations ground-segment configuration preoperational is frozen until S2B launch S2B commissioning is performed Sentinel-2 Mission enters full Operational routine phase Table 4-9 Sentinel-2 Spacecraft Units Phase-In Scenario within the PDGS It shows in particular: ○ A RP configuration accurately following the deployed PDGS configuration systematically reference-qualified for the constellation; ○ A pre-launch version of the PDGS already (pre-)qualified for the constellation following initial PDGS IV&V activities; 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.
GSC Sentinel-2 PDGS OCD Issue 1 Revision 2 (draft) - 25.07.2010 GMES-GSEG-EOPG-TN-09-0008 page 165 of 350 ○ A PDGS deployed configuration with a hybrid state starting at the time the PDGS infrastructure is upgraded from a single mission sizing to its final sizing required to support the constellation. From this event onwards, the PDGS assumes nominal operations for Sentinel-2A while tests are carried out in parallel to prepare for readiness of Sentinel-2B operational phase-in; ○ A PDGS configuration reaching the validation state for the Sentinel-2A/B constellation only after the completion of OSVs applicable to Sentinel-2B; ○ A PDGS configuration with full functionality vis-à-vis the GSC for the Sentinel-2A/B constellation after successful Sentinel-2B commissioning. The hybrid-state PDGS configuration immediately following its full-size reconfiguration to support Sentinel-2B preparatory activities will be the critical step of this scenario. It will impose: ○ A careful configuration of all Data-Access elements of the PDGS so that user access is not spoilt by the testing activity performed on the Sentinel-2B specific dataflow. ○ A careful configuration of the PDGS mission-planning elements, in particular vis-à-vis the FOS, so that the mission planning function continues operating nominally for Sentinel-2A independently from Sentinel-2B test planning; ○ A thorough pre-configuration and validation on the RP of new infrastructure elements shared between Sentinel-2A and Sentinel-2B before deployment in operations; ○ Specific functional, interface and reliability requirements at system and sub-system level as appropriate to ensure conflict-free Sentinel-2A and Sentinel-2B mission dataflows within the PDGS; ○ Well-defined operational procedures dedicated to this phase-in scenario, validated and rehearsed initially as part of the pre-Sentinel-2A launch PDGS IV&V activity. 4.6.5 EDRS PHASE-IN The launch of the EDRS piggyback payload is currently planned in the 2013 timeframe, hence in the same timeframe as the Sentinel-2A launch and start of operations. At this stage, it is however not foreseen to commission Sentinel-2A together with EDRS within the short time allocated for commissioning. Hence, unless EDRS is launched and commissioned wellbefore Sentinel-2, the approach described here foresees as general case an EDRS operational phase-in while Sentinel-2A is already in operations. The phase-in of EDRS imposes at term a drastic change to the mission operation scenario due to the reshaping of the CGS network required from the strict X-Band scenario. It is hence expected that a commissioning period of Sentinel-2 with EDRS will be required in parallel to the Sentinel-2A operational service before this change is effectively carried out. This paragraph describes the resulting two-step phase-in approach. 4.6.5.1 Commissioning of EDRS Capabilities with Sentinel-2 As described in 3.7.2, the Sentinel-2 PDGS foresees the use of EDRS capabilities at three levels, being the data-relay, data repatriation and data-dissemination. As the latter is 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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Table 4-5 Radiometric image quality
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Product- Type On-Line retention Off
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4.5.1.5 Scalability and Flexibility
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o preserving integrity of exchanged
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6 DETAILED OPERATIONS CONCEPTS GSC
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o Report generation frequency and c
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○ MSI L1A, L1B, L1C and TCI produ
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Some relevant use cases are present
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Two main mapping services have been
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The requirement on the cloud covera
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GSC Sentinel-2 PDGS OCD - Emits - ESA

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