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 44 of 204 specific acquisitions performed for Cal/Val or degraded quality products requiring investigation. S2-PDGS-SYS-185 The PDGS shall provide on-line access to the product data and associated auxiliary-data physically stored in the archives with : on-line access latency implying the sole download from the archive for typically all data with less than one year of age; off-line access latency implying a preliminary restore from a long-term archive for older data or data not available on-line. S2-PDGS-SYS-190 The PDGS shall support access to off-line data via an asynchronous mode of operation whereby: The long-term archive is instructed to bring the requested data on-line through the medium term archive after a first supply request; The data consumer waits for the requested data to be available on-line and performs the download as per on-line data supplies as soon as available. S2-PDGS-SYS-195 The PDGS shall support automated Datasets subscription mechanisms whereby the data corresponding to a recurrent user-defined criterion is fetched automatically. S2-PDGS-SYS-200 The PDGS shall be able to optimize the data-access performance towards the user bases through scalable and transparent data replication and mirroring mechanisms taking into account the physical network connectivity and throughput between the user sites and the PDGS archive locations. S2-PDGS-SYS-205 The PDGS shall provide the CDS/DAIL interoperable interface service for Sentinel-2 product catalogue access and on-line access. S2-PDGS-SYS-210 The PDGS shall be able to record the data accesses performed by every user and to periodically generate data access statistics. S2-PDGS-SYS-215 The PDGS shall be able to publish the collection of True-Colour Images to the general public via the public Internet with no access restriction. 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 45 of 204 S2-PDGS-SYS-220 The PDGS shall publish the TCIs through a user-friendly GUI fostering public and universal access to high-resolution earth images. It shall provide simple human interaction mechanisms allowing intuitive browsing actions through simple zoom in/out and navigation capabilities. S2-PDGS-SYS-225 The PDGS shall be able to accommodate enhancements and evolutions via third-party collaborations including: Enhancement of the data-access performance, data availability and reliability by means of third-party operated centres replicating and mirroring PDGS provided data in the overall federated data-access network of centres; Hosted-processing capabilities whereby collaborative entities can run their proprietary data-processors within the PDGS infrastructure for the validation and/or operational production of new complementary products. S2-PDGS-SYS-230 The PDGS shall be able to integrate and run the L2A prototype processor in the PDGS as a hosted-processor triggered by authorised users. S2-PDGS-SYS-235 With respect to collaboration activities, the PDGS shall provide a specific service allowing to trigger new collaborations and monitor the status and outcome of all collaborations by means of appropriate reporting. S2-PDGS-SYS-240 The PDGS shall be able to control, maintain and report on the mission operational configuration covering the following activities: The definition of a mission configuration baseline in line with the HLOP (e.g. orbit scenario, MSI observation scenario, CGS/LGS downlink scenario, data circulation scenario, etc); The management of PDGS baseline changes driven internally as required by the mission performance assessment activities, software maintenance activities, or system evolutions (e.g. Sentinel-2B phase-in, change of downlink scenario, EDRS phase-in, new LGSs, etc); The maintenance of all operations reports generated by the PDGS sub-systems providing systematic traceability to relevant baseline they apply to. S2-PDGS-SYS-245 All mission configurable items shall be centrally managed and deployed throughout the PDGS and external interfaces (FOS, EDRS, CNES/CST, etc) from a single local configuration-control element. This includes: The MSI configuration parameter tables © 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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S2-PDGS-NET-065 The DCN shall provi
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GSC Sentinel-2 PDGS SRD - emits - ESA

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