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2 Reports on Geodesy

2 2006

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Preliminary Central European intraplate velocities from CEGRN campaigns 1994 to 2005

Drescher R., Becker M., Schoenemann E.

Reports on Geodesy

2006

z. 1/76

47-54

Within the Central Europe Regional Geodynamics Project (CERGOP) for the establishment of a high precision reference frame CEGRN (Central European GPS Geodynamic Reference Network) eight GPS campaign solutions since 1994 are available for velocity estimation. They were used to compute preliminary station velocities in the ITRF2000. This paper reports not only on the results and some comparisons with former solutions published by the CERGOP group but also on the improved options available for velocity estimation with version 5.0 of Bernese GPS Software.

Geokinematical implications inferred from analysis of permanent stations in Central European region

Hefty J., Igondova M.

Reports on Geodesy

2006

z. 1/76

29-38

GPS permanent stations situated in Central Europe region are systematically analyzed in order to investigate behaviour of long-term monitoring of horizontal position and ellipsoidal height. On the basis of data from more than 30 sites the quality of the station is evaluated. Stability of station is measured by variety of parameters: jumps and discontinuities of known but also of unknown origin, seasonal variations amplitudes and phases and diurnal coordinate variations. We estimate for each network station its main deterministic characteristics including identification of eventual jumps, their time of occurrence and magnitude, annual variations and site velocities. The set of criteria for defining "stable" permanent station is proposed.