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GSC Sentinel-2 PDGS SRD - emits - ESA

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<strong>GSC</strong> <strong>Sentinel</strong>-2 <strong>PDGS</strong> <strong>SRD</strong><br />

Issue 1 Revision 2 (draft) - 25.07.2010<br />

GMES-GSEG-EOPG-RD-09-0028<br />

page 11 of 204<br />

which after trade-off with the system available capacity are propagated in the <strong>GSC</strong> DAP,<br />

where GMES Services updated requirements and evolving space systems capacity are<br />

taken into account. The DAP Data Sets are pre-defined collections of coherent multimission<br />

products responding to specific different users needs and therefore with different<br />

characteristics.<br />

The CDS interfaces with the GMES Service Component for gathering data requests and<br />

providing coordinated data access and services, and with the Ground Segments of the<br />

GCM’s and the <strong>Sentinel</strong> missions for coordinating the data provision from the GCM’s in<br />

response to the requests.<br />

Figure 1-1 sketches the <strong>GSC</strong> Data Access System context, the role of the Coordinated<br />

Data Access System (CDS) and its interface with the GMES Service Segment (for gathering<br />

data requests and providing coordinated data access and services), and with the Ground<br />

Segment of the GCM’s and the <strong>Sentinel</strong> missions (for coordinating the data provision in<br />

response to the requests). The <strong>GSC</strong>DA data and services provision from the GMES<br />

Contributing Missions (GCMs) is regulated through specific agreements with <strong>ESA</strong> through<br />

the DAP Management function. Being dedicated GMES missions, the latter interface is not<br />

strictly necessary for the <strong>Sentinel</strong> missions.<br />

Long-term EO Data Requirements<br />

Agreements<br />

DAP<br />

Management<br />

GMES<br />

Service<br />

GMES<br />

GMES Projects<br />

Service<br />

Services<br />

Projects<br />

• Registrations<br />

• Data Requests<br />

• Subscription<br />

Registrations<br />

<strong>GSC</strong> Data Sets<br />

<strong>GSC</strong> Products<br />

• Data Requests<br />

• Subscription<br />

Requests<br />

Coordinated<br />

Data Access<br />

System (CDS)<br />

•Products<br />

•Reports<br />

• Data Requests<br />

• Subscription Requests<br />

•GCM Products<br />

•Reports<br />

<strong>GSC</strong><br />

<strong>GSC</strong><br />

Contributing <strong>GSC</strong><br />

Contributing<br />

Missions Contributing<br />

Missions<br />

Missions<br />

<strong>GSC</strong><br />

<strong>GSC</strong><br />

<strong>Sentinel</strong><br />

<strong>Sentinel</strong><br />

Missions <strong>GSC</strong> <strong>Sentinel</strong><br />

Missions<br />

Missions<br />

GCM & <strong>Sentinel</strong> Products<br />

<strong>GSC</strong> Data Access<br />

Figure 1-1 GMES Space Component Data Access System Overview<br />

<strong>ESA</strong> UNCLASSIFIED – For Official Use<br />

© <strong>ESA</strong><br />

The copyright of this document is the property of <strong>ESA</strong>. It is supplied in confidence and shall not be reproduced, copied or<br />

communicated to any third party without written permission from <strong>ESA</strong>.

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