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 306 of 350 6.16.3.4 Second-Line Support-Desk This scenario stands for the management of expertise user support requests routed from the First-Line Support-Desks of ESA’s MMUS or of the CDS. The MPA function receives expertise support requests for investigation of potential anomalies observed by the users. Based on the support request the MPA operator possibly supported by expert teams defines and starts an investigation including: Registering and characterisation of the support request; Review of the available quality control reports relevant to the investigation; If needed, access to the related products via the MMUS data-access services and adhoc investigation on the reported anomaly by performing specific inspections and quality control checks. In case the investigation leads to highlighting a new problem (e.g. on the instrument configuration, on the PDGS configuration, on the system operations, etc) corrective actions are triggered (e.g. mission configuration change, system anomaly reporting, etc). The conclusions on the performed investigation are sent to back to the First-Line Support Desk having triggered the request (MMUS or CDS Support-Desks). 6.16.3.5 Auxiliary Data Conformity Control This scenario stands for the autonomous verification of the PDGS new auxiliary data (OGCD and OBCD) before the official release (via the MCC function, cf. section 6.14) to the processing centres (OGCD) and to the FOS (OBCD). Some auxiliary data that are mandatory for the generation of Level-1 products (e.g. DEM or the GRIs) is verified (e.g. corrupted format) to avoid problems on the processing chain. Accordingly the MPA function performs the configured verification prior to the official release. The MPA function receives the Auxiliary Data and performs the configured compliance checks. If the performed checks are successful, the Auxiliary Data will be stamped as compliant and eligible for release, otherwise the distribution will be stopped to prevent problems on the processing chain. In addition, the MPA function can provide specific tools to support the expert teams on the auxiliary data verification activities (e.g. visualisation tools of the Global Reference Images - GRIs). Some use cases of this operation scenario are: Inspection and verification of the Global Reference Images (GRIs): the global reference images is consider as an external GIPP which will be gradually built through an appropriate selection of orbits followed by a precise geometric refinement performed on the basis of spatio-triangulation using Sentinel-2 data and an auxiliary database of ground control points; New DEMs version update when better accuracy available or due to heavy landscape modifications by natural disasters; Updates on the snow / ice cover global maps. 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 307 of 350 6.16.3.6 Expert Teams Reports Integration The MPA function is responsible of the integration of additional / external expert teams by undertaking the outcome of their performed quality control activities for a harmonised presentation. As such, the MPA function receives specific quality reports from different expert teams involved in the different assigned activities for cal/val or / and quality control according to the agreed interfaces. Thus, the MPA function autonomously gathers, ingests, and harmonises the reporting data coming from external sources. One use case for this scenario is the reporting information supplied by the Off-Line POD Service on: ○ Analysis of the Sentinel-2 on-board navigation solution accuracy; ○ Analysis the Sentinel-2 POD products accuracy with respect to their related timeliness and accuracy thresholds; ○ Long term monitoring of the POD products and on-board navigation solutions. 6.16.3.7 Access to the HKTM Data Decoded by the FOS This scenario stands for the HKTM parameters retrieval from the FOS as required in support of the other mission performance assessment activities. The MPA function supports the expert-team for the access to the decoded HKTM data (packets or parameters in engineering values) required as part of the off-line quality control and anomaly investigation activities in response to the MMUS/CDS Support-Desk inquiries. The FOS provides a data-access service to the decoded HKTM named EDDS that the MPA function will use as needed. The EDDS supports amongst others, interactive mechanisms for on-demand data retrieval or batch requests for cyclic data retrieval activities. Therefore this scenario stands for the HKTM parameters retrieval according to the following EDDS mechanisms (cf. document [RD-42]): ‣ EDDS Client Application for interactive requests by humans; ‣ Web browser for the upload of a batch request by humans and then a File / Email server for the autonomous reception of the batch data responses. 6.16.4 OPERATION SCENARIOS – CALIBRATION AND VALIDATION 6.16.4.1 Generation of Level-0/1 On-Ground Configuration Data This scenario stands for the generation and supply of the on-ground configuration data (OGCD) as required by the PDGS for the production generation activities covering up to Level-1C product data. Currently, the Ground Image Processing Parameters (GIPP) is the only OGCD managed for Level-1C product generation. The list of Level-0/1 GIPPs to be generated is provided in [RD- 07]. 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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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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