Data Management Infrastructure

The payload data ground segment infrastructure at DLR consists of acquisition, processing, archiving, and access facilities. The facilities are closely integrated with technical interfaces and well-dimensioned network connections.

 

Data Reception Facilities
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Ground Station Inuvik

DLR operates EO satellite receiving stations e.g. in Neustrelitz (Mecklenburg-Vorpommern), Inuvik (Canada), and on the Antarctic Peninsula. All stations are equipped with an IT-infrastructure capable of handling large-volume satellite payload data downlinks. Network connections are being put in place to ensure adequate data transfer rates between the polar stations and the central archive in Oberpfaffenhofen. A 10 Gbit high-speed network connects the facilities in Neustrelitz and Oberpfaffenhofen. The stations are also capable of receiving satellite telemetry and housekeeping data and provide uplink capability for commanding the satellite. In order to increase reception capacity for Tandem-L data it is planned to contract external providers.

 

Data Processing

DLR operates a high-performance computing infrastructure based on cloud computing concepts. This so-called “GeoFarm” consists of some thousands of CPU cores, 1.7 petabyte of online processing storage and performant RAM layout. This infrastructure will be continuously expanded according to the user needs.

 

Data Archiving
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German Satellite Data Archive (D-SDA)

DLR operates the German Satellite Data Archive (D-SDA). The D-SDA is the central DLR infrastructure for managing Earth observation mission payload data and higher level products. The fully automated system already hosts and manages Earth observation data from a number of national and international Earth observation missions, including TerraSAR-X, TanDEM-X, and the Copernicus missions Sentinel-1, Sentinel-3, and Sentinel-5 Precursor. It handles all tasks related to data archiving, administration and access, and ensures smooth data flows in and out of the archive, with interfaces to acquisition and processing facilities, as well as to internal and external users. The D-SDA is a distributed infrastructure with interconnected facilities operated in Oberpfaffenhofen and Neustrelitz.