GSC Sentinel-2 PDGS SRD - emits - ESA
GSC Sentinel-2 PDGS SRD - emits - ESA
GSC Sentinel-2 PDGS SRD - emits - ESA
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
<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 127 of 204<br />
summary product-level quality checks consolidated from the granule-level or datastriplevel<br />
quality checks.<br />
S2-<strong>PDGS</strong>-DAG-125<br />
The <strong>PDGS</strong>/DAG function shall perform TCI downloads as singular tile downloads.<br />
S2-<strong>PDGS</strong>-DAG-130<br />
The <strong>PDGS</strong>/DAG function shall, when relevant, merge together several partial and<br />
complementary TCI PDI tiles, each one covering in parts the tile area, and provide a<br />
single consolidated TCI tile in output.<br />
Comment: Partial and complementary TCI tiles will be produced at the datastrip<br />
boundaries fragmented between two ground-stations downlinks.<br />
S2-<strong>PDGS</strong>-DAG-135<br />
The <strong>PDGS</strong>/DAG function shall support parallel downloads from the same source server<br />
and from different source servers in response to a single download request.<br />
S2-<strong>PDGS</strong>-DAG-140<br />
The <strong>PDGS</strong>/DAG function shall optimise the download performance taking benefit of the<br />
scattering of the data in several centres and considering the communication performance<br />
between users and servers.<br />
S2-<strong>PDGS</strong>-DAG-145<br />
The <strong>PDGS</strong>/DAG function shall, in optimising the download performance, be able to track<br />
and account for the amount of data downloaded by each user and globally on every<br />
server.<br />
S2-<strong>PDGS</strong>-DAG-150<br />
The <strong>PDGS</strong>/DAG function shall allow to queue the download requests while keeping under<br />
a configurable limit the number of download operations performed in parallel at each<br />
centre based on the centre's outbound network resource bandwidth.<br />
S2-<strong>PDGS</strong>-DAG-155<br />
The <strong>PDGS</strong>/DAG function shall prioritise the access to the download resources according<br />
to the user priority setting qualified in the authorisation acknowledgment provided by the<br />
MMUS function.<br />
S2-<strong>PDGS</strong>-DAG-160<br />
The <strong>PDGS</strong>/DAG function shall apportion the usage of the network resources by public<br />
users for TCI downloads by means of a download priority setting assigned to TCI<br />
downloads configurable per centre.<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>.
Change language