GSC Sentinel-2 PDGS OCD - Emits - 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 281 of 350
‣ Gateway towards the CDS/DAIL in support of the HMA cataloguing and ordering
service.
6.11.1.2 Role Split with the DAG Function
The MMUS function catalogues the Sentinel-2 production in order to support the product
queries performed by the users and subsequently offer an on-line download interface.
As explained in section 6.10.1.3, the MMUS function will make use of the DAG function to
perform the actual downloads.
6.11.2 OPERATION CONSTRAINTS
The MMUS function, although it has a multi-mission nature, it must cope with some mission
specific design drivers in order to be able to perform the related product presentation and
subsequent management of the product download activities. More concretely, the MMUS
function will manage the Sentinel-2 product breakdown strategy (i.e. product decomposition
into granules and tiles, cf. [RD-07]) as part of the catalogue activities and subsequent product
discovery and download activities triggered by the user.
6.11.3 OPERATION SCENARIOS
6.11.3.1 Sentinel-2 Users Management
This operation scenario stands for the operator-driven (administrator level) management of
the Sentinel-2 users including definition of profiles, users pre-registration activities, accessleverage
definition, etc.
Accordingly the MMUS function operation will administrate the access to the users, and their
related authentication and authorisation activities.
6.11.3.2 Sentinel-2 Datasets Management
This operation scenario stands for the operator-driven (administrator level) management of
the Sentinel-2 production datasets (i.e. product collections) offered to the users. As part of
this scenario, it is comprised the definition, publishing, update and removal of the different
Sentinel-2 datasets.
This scenario includes the appropriate definition of the access leverage to such datasets
according to the different user profiles.
The MMUS function operator will define the Sentinel-2 datasets and the access leverage
according to the HLOP covering typically:
‣ Datasets definition based on time-window and geographic coverage;
‣ Datasets definition based on the cloud-cover percentage;
‣ Datasets definition based on the product-type;
‣ Datasets envisaged for the expert and cal/val users.
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