Conceptual Design of Data Archive and Distribution System for Geo-kompsat-2a

The meteorological satellite, GEO-KOMPSAT-2A, is being prepared to take over the role of COMS (Communications, Ocean, Meteorological Satellite) in Korea. GEO-KOMPSAT-2A is going to equip with advanced meteorological imager exhibiting high-performance and collect a variety of meteorological data. It also will be a satellite including space weather sensors like Medium-energy Particle Detector. Therefore, GEO-KOMPSAT-2A will acquire large amounts of data and transmit them to the ground station. Accordingly it is self-evident that the amount of data handled by the ground system must be managed to increase significantly compared to the existing COMS satellite. Korea Meteorological Agency (KMA) is promoting the development of ground systems for GEOKOMPSAT-2A which can process, manage, and serve the high-level meteorological data. Until now, the development plan, the basic system configuration and deployment have been studied and from 2014 the development phase will be started in earnest. Data Archive and Distribution System discussed in this paper is one of the systems which consists the ground segment of GEO-KOMPSAT-2A and in particular, the system will manage all of satellite raw data and processed data and distribute them to the users who need it in a variety of ways. Data Archive and Distribution System will be located in both primary and backup sites and constructed with the same configuration. A remote backup centre is also placed separately. Finally, we’re looking forward to be consolidated into Korea’s Data Collection or Production Centre (DCPC) of WMO Information System (WIS). To design data archive and distribution system, first the amount of data to be stored for whole mission life was assumed and secondly system configuration for reliable data service was considered. Data archive system has been designed to have 3-tier structure considering the archive period and the frequency of use. Data distribution system will provide data retrieval service and data analysis service differentiated according to user group such as internal user, external specialist, general user and industry. Especially, Open API for industry application will be served. In this paper, the concept of Data Archive and Distribution System designed by ETRI will be presented and discussed.