Analysis Center of the International GNSS Service

The International GNSS Service (IGS) as a service of the International Association of Geodesy (IAG) provides GNSS data and products with highest quality and that not only to the scientific community. GFZ contributes to this service by operating about 30 globally distributed Multi-GNSS reference stations and hosting an Analysis Centre (AC). With its products namely precise station coordinates, satellite orbits, clock corrections and Earth orientation parameters the AC contributes also to the generation and maintenance of the International Terrestrial Reference Frame (ITRF). From 2003 to 2007, the Analysis Centre Coordination (ACC) was the task of GFZ and the official combined satellite orbit and clock products were generated here.
Currently GFZ contributes to all three IGS product lines: Final, Rapid and Ultra-Rapid. Data of the two fully operational Global Satellite Navigation Systems GPS and GLONASS are used for the processing of up to 300 stations. The in-house developed analysis software in its current version EPOS.P8 is used to produce all needed geodetic products as well as some additional ones, e.g. for meteorological applications.

GFZ employees are fellows of several IGS Working Groups, e.g. TIGA (lead), Troposphere and Real-Time.

GFZ products (FTP):



  • Gendt, G., Dick, G., Söhne, W., GFZ Analysis Center of IGS – annual report 1998, in: Gowey, K., Neilan, R., Moore, A. (Eds.), IGS 1998 Technical Reports. Jet Propulsion Laboratory, Pasadena, pp. 79–87, 1999.
  • Ferland, R.; Gendt, G.; Schöne, T. (2005): IGS Reference Frame Maintenance, Celebrating a Decade of the International GPS Service - Workshop and Symposium 2004, Berne Workshop & Symposium (Bern 2004).
  • Ge, M.; Gendt, G.; Dick, G.; Zhang, F. P.; Rothacher, M. (2006): A New Data Processing Strategy for Huge GNSS Global Networks. Journal of Geodesy, 80, 4, 199-203. | EDOC: 9535 | Abstract | 10.1007/s00190-006-0044-x |
  • Uhlemann, M.; Rudenko, S.; Nischan, T.; Gendt, G. (2010): GFZ results of the first IGS Data Reprocessing Campaign. IGS Workshop and Vertical Rates Symposium (Newcastle, England 2010).

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