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GPS-PDR Project

International GNSS Service Homepage    Forschungseinrichtung Satellitengeodäsie TU München    TU Dresden, Institut für Planetare Geodäsie    GFZ Potsdam
During the time span of more than a decade since the official start of the IGS (International GNSS Service) in 1994, considerable improvements in the processing strategies and modeling of global GPS solutions were achieved.
GPS-PDR Project Homepage     International GNSS Service Homepage

Forschungseinrichtung Satellitengeodäsie der TU München

TU Dresden, Institut für Planetare Geodäsie
Due to the changes at the individual IGS analysis centers during these years the resulting time series of global geodetic parameters are inhomogeneous and inconsistent. A geophysical interpretation of these long series and the realization of a high-accuracy global reference frame are therefore difficult and questionable. The GPS reprocessing project GPS-PDR (Potsdam Dresden Reprocessing), initiated by TU München and TU Dresden and continued by GFZ Potsdam and TU Dresden, provides selected products of a homogeneously reprocessed global GPS network such as GPS satellite orbits and Earth rotation parameters. If you decide to use the GPS-PDR reprocessing products, please refer to the publication by Steigenberger et al. (2006) given below in any publication or presentation.

The following products can be retrieved and downloaded:

* Satellite Orbits - GPS-OG-3-FSO

               SP3c format
               Bernese Standard Orbit format (binary for Linux)

* Earth Rotation Parameters - GPS-ERP-3-FE

               IERS format
               Bernese ERP format

* GPS Satellite Problems - GPS-OG-3-SATCRX

               Bernese CRX format
All data files alternatively are available with the ISDC standard or the Bernese data file names. By default requests are limited to 1000 files or 1 GB within 24 hours. You can request a higher file-limit and more space via Edit your personal information.
Fritsche, M, R. Dietrich, C. Knöfel, A. Rülke, S. Vey, M. Rothacher, P. Steigenberger (2005). Impact of higher-order ionospheric terms on GPS estimates. Geophysical Research Letters, Vol. 32, L23311, doi 10.1029/2005GL024342
Schmid R., M. Rothacher, D. Thaller and P. Steigenberger (2005). Absolute phase center corrections of satellite and receiver antennas. GPS Solutions, Vol. 9, pp. 283-293, doi 10.1007/s10291-005-0134-x
Steigenberger, P, M. Rothacher, R. Dietrich, M. Fritsche, A. Rülke, and S. Vey (2006). Reprocessing of a global GPS network. Journal of Geophysical Research. Vol. 111, B05402, doi 10.1029/2005JB003747
Steigenberger, P., V. Tesmer, M. Krügel, D. Thaller, R. Schmid, S. Vey and M. Rothacher (2007) Comparisons of homogeneously reprocessed GPS and VLBI long time-series of troposphere zenith delays and gradients. Journal of Geodesy, doi 10.1007/s00190-006-0124-y
Vey, S., R. Dietrich, M. Fritsche, A. Rülke, M. Rothacher, P. Steigenberger (2006). Influence of mapping function parameters on global GPS network analyses: Comparisons between NMF and IMF. Geophysical Research Letters, Vol. 33, L01814, doi 10.1029/2005GL024361
Schmid, R., P. Steigenberger, G. Gendt, M. Ge and M. Rothacher (2007). Generation of a consistent absolute phase center correction model for GPS receiver and satellite antennas. Journal of Geodesy, doi 10.1007/s00190-007-0148-y
This project was funded by Deutsche Forschungsgemeinschaft (DFG).
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