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 304 of 350 6.16.1.5 End-to-End System Performance Monitoring The MPA function undertakes the responsibility of the monitoring of the activities with an impact at PDGS at system level. As such, the MPA function assesses the full system behaviour with respect to the mission requirements and the current HLOP. Therefore the MPA function will allow raising any potential deviation on the PDGS system operations with respect to the HLOP. As part of the end-to-end system performance monitoring, the MPA function will assess for the correct operations of: ‣ Mission configuration control; ‣ Planning chain; ‣ Production chain; ‣ Data-access chain. 6.16.2 OPERATION CONSTRAINTS Due to the Sentinel-2 mission operational character (i.e. as a GMES Contributing Mission), the monitoring of the PDGS correct behaviour and safe operations are a critical aspect. Thus, the required 24x7 monitoring activities shall maximize the automation of recurrent tasks minimising the operator involvement. 6.16.3 OPERATION SCENARIOS – OFF-LINE QUALITY CONTROL 6.16.3.1 Configuration of the Quality Control Reporting This scenario stands for the expert-team driven configuration of the MPA function with respect to the systematically performed quality control activities, mainly the reporting. The quality control procedures evolve during the mission life-time according to the stage of the mission and the platform and payload healthiness evolution. As such, the MPA function must be agile and intuitive for the configuration change activities and naturally support the addition or modification of new quality control procedures. The quality control tasks performed during the commissioning phase may not be the same to the ones performed during the operational phase or close the end of mission, in which the potential degradation of the platform/payload may require different verifications. As such, the MPA function supports the expert-team in the configuration of the quality control activities via the adequate HMIs and tools envisaged to minimise this effort. The main envisaged use cases according to this operation scenario are: The quality control procedures configuration for the commissioning phase; The update of the quality control procedures during the operations; Specific addition of quality control procedures in support of anomalies investigation. 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 305 of 350 6.16.3.2 Generation of Quality Control Daily Reports This scenario stands for the autonomous generation of the daily quality control reports based on the overall production. The daily quality control reports can include amongst other: ‣ Relevant statistics on the configured quality indicators (geometric, radiometric, defective pixels, etc); ‣ Product-data surface classification (land, sea, ice, clouds, etc); ‣ Percentage of passed/failed quality control checks; ‣ List of product-data which is format-corrupted or with any anomaly; ‣ Quality disclaimers, to provide information on the quality properties of the product data already available to the users; ‣ Significant anomalies detected on the production that may require special attention and intervention. The MPA function is autonomously fed with the production data grouped in specific quality control (logical) datasets (cf. section 6.11) via the MMUS function (i.e. using its download manager). In addition, the MPA function can take advantage of the PDGS functions deployed at the same centre – MPAC – (cf. section 5.3.2.3) to make use of the available mechanisms for data circulation and access to the local archive. The MPA function automatic checks and reports generation can be complemented by additional visual inspection activities of a sub-set of product images performed interactively by the expert teams. The MPA function quality control daily reports are supplied to the expert teams and available to the POM for the precise up-to-date information on the behaviour of the production chain. 6.16.3.3 Generation of Quality Control N-Day Cyclic Reports This scenario analogous the previous one stands for the autonomous generation of the cyclic quality control reports based on the overall production. The nature and scope of the cyclic reports is different than the daily ones, more focused on statistics over key Quality Indicators, which allow assessing the production / instrument response trends on the long-term. The cyclic quality control reports over a given cycle period can include amongst other: ‣ Relevant summary of statistics on key quality indicators (geometric, radiometric, defective pixels, etc); ‣ Percentage of passed/failed quality control checks; ‣ Evolution in time of the MSI characterisation; The MPA function autonomously generates the cyclic reports according to configuration on schedule-driven basis. The MPA function quality control cyclic reports, as for the previous scenario, are supplied to the expert teams and available to the POM for the precise up-to-date information on the behaviour of the production chain and the MSI characterisation. 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 Identifier S2MSI0 S2M
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5 PDGS DESIGN GSC Sentinel-2 PDGS O
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○ Effective processing resources
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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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GSC Sentinel-2 PDGS OCD - Emits - ESA

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