EPS-SG Overall Ground Segment Overview.

The EPS-SG Overall Ground Segment (OGS) will support the ground functions required to meet the EPS-SG Missions objectives.

The main functions of the OGS will be:

• Acquiring, processing and disseminating EPS-SG global and regional data to the end users, as part of the EPS-SG Global and Regional missions.
• Monitoring, controlling and operating the Metop-SG satellites in orbit.
• Archiving EPS-SG global data and providing off-line retrieval from archive and user support services.
• Perform calibration and validation of the products, routinely monitoring the Metop-SG instruments' health, and product quality.

Figure 1: Overview of the EPS-SG Overall Ground Segment (OGS)

The OGS will consist of three main blocks:

• Mission Control and Operations (MCO)
  The MCO block will ensure the end-to-end monitoring and control of the Metop-SG spacecraft including Tracking, Telemetry and Control (TT&C) station.
• Payload Data Acquisition and Processing (PDAP)
  The PDAP block will ensure the end-to-end chain from data acquisition to the generation of level 1 and level 2 products.
• EUMETSAT Multi Mission Elements (MMEs)
  The Multi Mission Elements (MMEs) are EUMETSAT operational facilities and common infrastructure used by existing programmes. They are split in four groups: infrastructure, data centre, monitoring and dissemination. They will be used by EPS-SG after extension and upgrade.

The blocks described above will be complemented by a set of re-used EUMETSAT elements adapted to EPS-SG, services procured separately, and elements provided by partners such as NOAA and CNES.