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1
Content available Reference frame and model improvements in CEGRN
Drescher R., Becker M.
Reports on Geodesy
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2007
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z. 2/83
47-54
EN
The CEGRN Consortium decided to reprocess all GPS campaigns according new compiled guidelines. In the contribution these guidelines are introduced. Furthermore it was tested, whether they are also suitable for the first campaigns with their paticularities.
2
Content available remote Work-Package 7 of the CERGOP-2/Environment: geo-kinematical modelling and strain analysis final report: april 2003 - july 2006
Hefty J., Haslinger C., Stangl G., Becker M., Drescher R.
Reports on Geodesy
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2006
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z. 4/79
419-459
EN
The main objective of Work Package 7 (WP7) was modelling of the regional intraplate three-dimensional velocities at the millimetre level on the basis of GPS satellite observations. Subsequently it was anticipated to use the GPS velocity filed for detection of velocity changes and for strain analysis in the region of Central Europe. This analysis has to be completed by evaluation of statistical significance of the derived velocities and strain parameters. All relevant information has to be visualised and to result to geo-kinematical maps of Central Europe describing the geometrically derived velocities and crust deformations. Inputs to WP7 are permanent and epoch GPS long-term observations in the region of Central Europe, east Alpine-Mediterranean and Balkan. The main information is expected from CERGOP epoch campaigns because their complexity, station distribution and long observing history. The permanent GPS stations in the region are analyzed within Work-Package WP5 "GPS data analysis and the definition of reference frames" (Hefty, 2006) and WP6 "Analysis of long term coordinate time series" (Caporali et al., 2006). Velocities from some new stations established within the CERGP-2/environment are estimated in section 2.6 of this report.
3
Content available Preliminary Central European intraplate velocities from CEGRN campaigns 1994 to 2005
Drescher R., Becker M., Schoenemann E.
Reports on Geodesy
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2006
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z. 1/76
47-54
EN
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.
4
Content available remote Improvements in CEGRN station monitoring and in the CEGRN velocity field
Becker M., Drescher R., Schonemann E., Gutwald J.
Reports on Geodesy
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2006
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z. 3/78
41-49
EN
GPS observations are still influenced by a whole amount of effects, as for example multiple reflections, ionosphere etc., which have an impact on the accuracy of the observables even on carefully selected sites. Up to now these effects can not be mitigated or modelled satisfactorily. Hence the monitoring of the station specific effects is mandatory in order to judge about data quality and derive weighting or delection schemes for optimal parameter estimation. Within the tasks of the work package 4 of the second Central Europe Geodynamics Project (CERGOP-2), a software tool was developed to monitor the constinuously operating reference stations of the network. The development was carried out using C++ libraries avalieble for the most common operating systems. Here was describe the basic features of this package and give an overview of its present status. Furthermore the update of CEGRN 2005 combination solution is described and the related velocity estimtion 1994 to 2005 is presented.
5
Content available remote Geo-kinematical modelling and strain analysis, final report: Aprill 2003 - July 2006
Hefty J., Haslinger C., Becker M., Drescher R.
Reports on Geodesy
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2006
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z. 3/78
157-197
6
Content available Analysis of CEGRN 2005 as the eighth of CERGOP observing campaigns
Hefty J., Gerhatova L., Stangl G., Haslinger C., Krauss S., Becker M., Drescher R., Grenerczy G., Kratochvil R., Liwosz T.
Reports on Geodesy
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2006
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z. 1/76
39-46
EN
Strategy of analysis and results from solution of CEGRN epoch campaign in 2005 Combined solution of CEGRN 2005 based or individual solutions from six an: centres and its comparison with CEGRN 2003 coordinates. Time evolution of coordinates at some long-term observed CEGRN sites obtained during epoch camp since 1994 and the related problems.
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