A new combined European permanent network station coordinates solution
The EUREF [International Association of Geodesy (IAG) Reference Frame Sub-Commission for Europe] network of continuously operating GPS stations (EPN) was primarily established for reference frame maintenance, and also plays an important role for geodynamical research in Europe. The main objective of this paper is to obtain an independent homogeneous time series of the EPN station coordinates, which is also available in SINEX format. A new combined solution of the EPN station coordinates was computed. The combination was performed independently for every week, in three steps: (1) the stated constraints on the coordinates were removed from the individual solutions of the Analysis Centers; (2) the de-constrained solutions were aligned to ITRF2000; (3) the resulting solutions were combined using the Helmert blocking technique. All the data from GPS weeks 900 to 1302 (April 1997–December 2004) were used. We investigated in detail the behavior of the transformation parameters aligning the new combined solution to ITRF2000. In general, the time series of the transformation parameters show a good stability in time although small systematic effects can be seen, most likely caused by station instabilities. A comparison of the new combined solution to the official EUREF weekly combined solution is also presented.
KeywordsEUREF EPN IGS Terrestrial reference frame Station coordinates
Unable to display preview. Download preview PDF.
- Ádam J, Augath W, Boucher C, Bruyninx C, Caporali A, Gubler E, Gurtner W, Habrich H, Harsson B, Ihde J, Kenyeres A, van der Marel H, Seeger H, Simek J, Stangl G, Torres J, Weber G, Hornik H (2002) Status of the European Reference Frame – EUREF. In: Adam J, Schwarz K-P (eds) Vistas for geodesy in the new millennium. Springer, Berlin Heidelberg New York, pp 42–46Google Scholar
- Altamimi Z (2002) Discussion on how to express a regional GPS solution in the ITRF. Report on the symposium of the IAG subcommission for Europe (EUREF), Ponta DelgadaGoogle Scholar
- Boucher C, Altamimi Z, Sillard P, Feissel-Vernier M (2004) The ITRF2000, IERS technical note 31, Verlag des Bundesamts für Kartographie und Geodäsie, Frankfurt am MainGoogle Scholar
- Brockmann E (1996) Combination of solutions for and geodynamic applications of the Global Positioning System (GPS), Bern (ftp://ftp.unibe.ch/aiub/papers/ebdiss.pdf)Google Scholar
- Bruyninx C, Carpentier G, Roosbeek F (2004) Detection and handling of EPN station irregularities. In: Proceedings of the IGS Symposium and Workshop, BernGoogle Scholar
- Ferland R, Altamimi Z, Bruyninx C, Craymer M, Habrich H, Kouba J (2002) Regional networks densification. In: Proceedings of the IGS Network, Data and Analysis Center Workhop, OttawaGoogle Scholar
- Habrich H (2002) Combining the EUREF Local Analysis Centers’ solutions, Report 23, Verlag des Bundesamts für Kartographie und Geodäsie, Frankfurt am Main, pp. 62–66Google Scholar
- Hugentobler U, Dach R, Meindl M, Fridez P (2005) Bernese GPS Software, Version 5 0. Astronomical Institute University of Bern, BernGoogle Scholar
- Kenyeres A, Bosy J, Brockmann E, Bruyninx C, Caporali A, Hefty J, Jivall L, Kosters A, Poutanen M, Fernandes R, Stangl G (2002) EPN Special Project on “Time series analysis ...” preliminary results and future prospects, EUREF Publication No. 10. In: Torres JA, Hornik H (eds), pp 72–75Google Scholar
- Mareyen M, Becker M (2000) On the removal of a priori restrictions from GPS network solutions in a SINEX format. Allgemeine Vermessungsnachrichten 107(11–12):405–411Google Scholar