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 220 of 350 ○ The remote query interface offered by the DAX function on the PDIs location through the federated archives and associated data-sinks (i.e. query requests to the dataaccess indexes through HTTP for the appropriate DAG server); ○ The interface vis-à-vis the AI function for the required PDIs requests and retrieval; ○ The interface vis-à-vis the DPC function for the triggering of the hosted-processors; ○ The interface vis-à-vis the different Front-End Services (e.g. the MMUS and OLIB functions) in order to support: ‣ Data location and data retrieval requests submitted by the Front-End Services; ‣ Final products assembly and supply (by the DAG client) to the Front-End Services; ‣ Hosted-Processing requests from the Front-End Services (i.e. the MMUS function); ○ The interface vis-à-vis the MMUS function for the supply of statistics and reports on the supplied PDIs, time to serve a product data item, volumes of data downloaded, etc; ○ Relevant M&C information on the server side. 5.2.3.13 Multi-Mission User Services (MMUS) Function 5.2.3.13.1 Function Objectives and High-Level Description The MMUS function is responsible for answering to the end-user access service interfaces defined in sections 4.10.1.1 and 4.10.1.2. As such, it will be in charge of the following tasks: ○ Customer care & management providing on-line user registration and “my account” online handling capabilities; ○ User groups management according to different levels of data-access (e.g. Cal/Val, unrestricted, etc); ○ Help-Desk service by management of user inquiries (i.e. web based ticketing tool); ○ Periodical provision of quality updated information on the available Sentinel-2 datasets, product quality, instrument unavailabilities, etc; ○ Advertising of available mission, instruments and products documentation, including generic mission description; ○ Centralised user authentication and authorisation (catalogue search, products browse, product download); ○ Products collection management through the definition of datasets; ○ Specialised datasets definition (logical datasets) based on the products cloud-cover percentage; ○ Product catalogue including metadata and browse images supporting ingestion and query capabilities; ○ Graphical products discovery and preview capabilities based on browse products and associated metadata; © 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 221 of 350 ○ Automation on the products download activities according to the users subscribed datasets; ○ Graphical interface for user-triggered hosted-processing requests and management; ○ Data-access (download) management based on previous data discovery/generation activities; ○ Datasets/hosted-processing subscriptions management (i.e. creation, edition, deletion, etc) and download automation; ○ CDS/DAIL catalogue and on-line access interface services implementing the CDS/DAIL ICDs; ○ Generating statistics and reports on the catalogue search requests, products requested for download, etc. 5.2.3.13.2 Design Drivers and Constraints The following drivers and constraints are identified: ○ High availability and reliability. The MMUS function nominal activities are aimed for operations towards end-users; ○ Support to the mission LTDP service granting data access operations accordingly; ○ Clear and user-friendly HMI operations; ○ Compliance with the applicable ICDs for the CDS/DAIL front-end; 5.2.3.13.3 Function Interfaces The Sentinel-2 users as interactively interacting with the MMUS through the web-client or the MMUS download manager. The following functional interfaces are identified via the MMUS: ○ User interactive/automatic transactions (login, browsing of Sentinel-2 products, hosted processing triggering, product download, etc); ○ Product discovery and on-line data access via CDS/DAIL i.e. through HMA service interfaces; ○ The metadata ingestion interface from the DAX function (systematic reception and ingestion of browse products and associated metadata); ○ The product data items location requests interface to the DAX function for the corresponding data-sinks location (DAG server) of the archived product data items; ○ The data-access requests interface to the DAG function (client side) to perform the actual product data items download and final product reconstruction; ○ The hosted processing transaction interface to the DAG function (triggering & monitoring of hosted-processing jobs); ○ The statistics and reports on the data-access activities performed from the user side (i.e. catalogue searches, products downloaded, etc). 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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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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