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 214 of 350 ○ Input interface to the AI function for the file based configuration (e.g. data retention policies, data circulation rules, etc.) provided by the MCC function (e.g. distributed archived with different data retention policies); ○ Input and output data circulation performed through the DC function; ○ Input and output interface for the PDIs gathering and supply (archival and retrieval) with the DPC function in support of the PDGS processing activities; ○ Output interface for the “archive reports” supply via the DC function to the DAX and the MPA functions that summarizes archive / removal / update activities of every distributed archive; ○ Query interface on the archive content for data discovery purposes (e.g. network interface); ○ Output interface for archived PDIs supply towards the DAG function in support of the PDGS data-access activities; ○ Archived data and metadata configurable import/export interfaces; ○ Input and Output Interfaces to the LTA service function (i.e. systematic circulation to the LTA service function and on-request data retrieval from the LTA service function); ○ M&C interface for status monitoring; 5.2.3.7 Long-Term Archive (LTA) Service Function 5.2.3.7.1 Function Objectives and High-Level Description The PDGS LTA service is responsible for ensuring long-term data preservation of Sentinel-2 data, including product and auxiliary data. As such, it is in charge of: ○ Archiving the MSI Product Data Items and auxiliary data provided by the AI function for LTA management; ○ Restoring the MSI Product Data Items and auxiliary data on request to the AI function; ○ Providing bulk data re-processing capabilities on the locally archived dataset. 5.2.3.7.2 Design Drivers and Constraints The following drivers and constraints are identified: ○ Maximum reuse of European existing infrastructures; ○ Service provider reliability; 5.2.3.7.3 Function Interfaces The following interfaces are identified for the LTA service: ○ Input interface to receive PDI and auxiliary data from the AI function from remote centres; 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 OCD Issue 1 Revision 2 (draft) - 25.07.2010 GMES-GSEG-EOPG-TN-09-0008 page 215 of 350 ○ Output interface to provide archived PDI and auxiliary data on request to the AI function; 5.2.3.8 Data Circulation (DC) Function 5.2.3.8.1 Function Objectives and High-Level Description The PDGS DC function is responsible for performing file exchange operations between subsystem interfaces within and external to a PDGS centre. File exchange circulation can be performed between electronic and media interfaces. As such, it is in charge of: ○ Autonomously retrieve required files from configured source interfaces, perform file transformation operations (e.g. format conversion, compression, file renaming, etc.) when required and deliver them to configured target interfaces; ○ Perform above described data circulation operations between electronic interfaces and/or media interfaces when required; 5.2.3.8.2 Design Drivers and Constraints The following drivers and constraints are identified: ○ Circulation operations reliability. DC function shall ensure that no file is lost during the data circulation operations due to network failures, media errors, etc.; ○ Flexibility in handling interfaces of very different nature such as electronic via ground link, via EDRS broadcast and via media. Therefore this capability will require versatility in adapting to such variety of interfaces and state-of-the-art media technologies; ○ Capacity to manage electronic interfaces with different connectivity requirements (e.g. secure/non secure connections, file naming conventions, different clean-up policies, etc.). Connectivity capacities will rely on standard protocols make use of standard protocols to perform data circulation operations (i.e. SFTP, FTP, SMTP, HTTP, etc); ○ Adaptability to support circulation operations from different PDGS functions and capacity to integrate in a seamless manner with them; ○ DC function circulation services towards the others PDGS functions aim at 99,9% reliability in average; ○ Full automation of all circulation capabilities versus electronic interfaces; ○ Maximised automation of circulation mechanisms via physical media aiming at a mechanical process driven by simple operational procedures modelling an automated transportation network; 5.2.3.8.3 Function Interfaces The following function interfaces are identified for the DC function: ○ PDGS functions requiring file-exchange capabilities; ○ A reporting interface to the MCC function via the own DC function; © 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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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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