BEYOND Collaborative Ground Segment (GS) – Polar Satellite Missions – Satellite data sharing system
Within the BEYOND project, a first version of BEYOND Collaborative Ground Segment Data Site was released on January 2016 under the auspices of NOA-IAASARS. It is available to public from the following URL: http://groundsegment.space.noa.gr/
Since April 2014, BEYOND has secured real time access to Sentinel-1, S-2, and future S-3, and S-5p data through the Collaborative Ground Segment hosted by NOA. Moreover, BEYOND has gained real time access to EOS (Aqua&Terra), NPP, JPSS, NOAA, MetOP, and FY, through the deployment of a X-/ L-band antenna, allowing real time reception, processing and archiving of data over the Southeastern Europe and Balkan countries.
The BEYOND Collaborative Ground Segment Data Site is a web based system designed to provide EO data to users with Cataloguing, Searching, Viewing and Downloading capabilities from contemporary satellites. Its strengths are: (i) user friendly web-enabled graphical user interface (GUI) and (ii) clean separation with backend functionalities.
Searching procedure involves: (i) the selection of a satellite, (ii) the selection of an instrument, (iii) the selection of a product, and (iv) the selection of a date range to search for products that became available (i.e. ingested) during that range. The search function returns a list of the available products, alongside with useful info (metadata). It offers a Straight-forward download of the product. Some other features that will be available in the future are: (i) more filter options, (ii) customized sorting, and (iii) on the fly compress/download of multiple products.
The ground segment architecture is based on the N-tier paradigm.
- The 1st tier is comprised of the ground station and the servers used for acquisition and processing.
- The 2nd tier is comprised of the datacenter and the backend processes used to extract and store metadata in the catalogues (e.g. Synchronizer process).
- The 3rd tier constitutes the frontend that is used to allow the users to search, view and download products. Ground Segment on the cloud!