GSC Sentinel-2 PDGS OCD - Emits - ESA

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ESA UNCLASSIFIED – For Official Use GSC Sentinel-2 PDGS OCD Issue 1 Revision 2 (draft) - 25.07.2010 GMES-GSEG-EOPG-TN-09-0008 page 226 of 350 ○ Output interface for Mission-Plan file(s) delivery to the FOS (MSI Image-Acquisition- Plan, Downlink-Plan) through to the MCC function; ○ Output interface to the ground-stations for delivery of the pass-list for the booking of the required downlink passes and the provision of the Acquisition-Schedule-Plan to specify the required data-reception and front-end processing activities; done through the MCC function via the DC function; 5.2.4.3 Mission Performance Assessment (MPA) Function 5.2.4.3.1 Function Objectives As introduced in Section 4.5.3.2, the MPA function objective is to monitor if mission requirements are being fulfilled by the PDGS and to trigger corrective actions in case of anomaly. MPA covers the following four sub-functions: o Off-line Quality Control o Calibration and Validation o Instrument Data and Quality Control Processors Verification o End-to-end System Performance Monitoring The objective of the Off-line Quality Control is to monitor if the payload and specific on-board systems (e.g. on-board navigation solution) related products meet the quality requirements along mission life-time. The objective of the Calibration and Validation (Cal/Val) is to update on-board and on-ground configuration data in order to meet product quality requirements. The objective of the Instrument Data and Quality Control Processors Verification is to verify the quality of the image processing and quality control processors. The objective of the End-to-end System Performance Assessment is to detect anomalies at system-level and provide high-level performance figures on the overall mission performance. 5.2.4.3.2 Design Drivers and Constraints Due to the operational character of the Sentinel-2 PDGS, MPA function shall maximize the automation of recurrent tasks. For not-automatic tasks clear interfaces with human operators shall be defined. The MPA Off-line Quality Control shall provide a comprehensible reporting of its findings in order to minimize anomaly recovery periods. MPA shall be able to manage a multi-satellite configuration (2A/2B/…). 5.2.4.3.3 Function Interfaces MPA function has the following interfaces with other PDGS functions and external entities: o The MPA provides to the POM (via DC function) the Off-line Quality Control reports (daily and N-day cyclic) (including payload and platform status reports), on-demand © 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 OCD Issue 1 Revision 2 (draft) - 25.07.2010 GMES-GSEG-EOPG-TN-09-0008 page 227 of 350 quality control reports for the Support Desk, Cal/Val reports (including requests for critical calibration parameters update), Processors Upgrade Requests (including verification results), processor upgrades requests and End-to-End System Performance reports. MPA gets from the POM (via DC function) mission requirements updates and on-demand quality control checks coming from the Support Desk; o The MPA feeds the CDS with quality control reports according to [AD-02] via the DC function; o The MPA gets products via the DAG function for performing Off-line Quality Control and Cal/Val tasks; o The MPA has access to a collocated DPC function embedding IDP and OLQC functions to perform processors validation activities; o The MPA has access to all POD data via the MCC and DC functions for performing Off-line Quality Control activities; o The MPA provides on-board and on-ground configuration data (OBCD and OGCD) and Cal/Val ad-hoc data acquisitions requests to the MCC function. MPA gets from MCC a reporting of the requests status; o The MPA has an operational interface with the RP function for the validation of the instrument data processing and on-line quality control processors before deployment of a new version; o The MPA function supports interactive access and batch requests to the FOS EDDS for the retrieval of decoded HKTM data (packets or parameters in engineering values) needed for the investigation of anomalies and / or auxiliary data processing activities; 5.2.4.4 Monitoring & Control (M&C) Function 5.2.4.4.1 Function Objectives and High-Level Description The Monitoring & Control function is responsible at PDGS centre level for ensuring that all available resources (i.e. hardware, software and local network) required for the PDGS nominal operations are available, ready and running under expected conditions. M&C function allows detecting anomalies that a priori may involve working problems in the functional chain or help finding the cause of any malfunction of any PDGS function. As such, it is in charge of: ○ Monitor physical resources (i.e. HW, network links, etc.) correct behaviour according to expected threshold ranges (e.g. free disk space thresholds); ○ Monitor other PDGS functions key running processes to assess in real time their working status; ○ Raising alarms to operators when monitored items are not under expected conditions. Alarms notification mechanisms to operators are configured according to error severity; ○ Provide a single and harmonized logs view point for all PDGS functions. M&C function undertakes others PDGS functions logs messages and visualises them according to different configuration criteria; © 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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Two main mapping services have been
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GSC Sentinel-2 PDGS OCD - Emits - ESA

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