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Atmospheric Effects on VLBI-Derived Terrestrial and Celestial Reference Frames

  • Hana Krásná(née Spicakova)Email author
  • Johannes Böhm
  • Lucia Plank
  • Tobias Nilsson
  • Harald Schuh
Conference paper
Part of the International Association of Geodesy Symposia book series (IAG SYMPOSIA, volume 139)

Abstract

We introduce our new terrestrial and celestial reference frames VieTRF10a and VieCRF10a, which have been estimated by the Vienna VLBI Software VieVS using VLBI observations since 1984. Details are provided about the computation, and comparisons are made with VTRF2008 and ICRF2, respectively, in terms of transformation parameters. Furthermore, we reaffirm the essentiality of a proper handling of horizontal tropospheric gradients and point out the systematic effect on the coordinates which arises through the use of constraints. We also assess the impact of two different mapping functions (GMF vs. VMF1) on terrestrial (TRF) and celestial reference frames, showing the scale difference between the TRF of 0.08 ppb which corresponds to 0.5 mm in height change.

Keywords

VLBI Reference frames Tropospheric delay modelling 

Notes

Acknowledgements

The authors acknowledge the International VLBI Service for Geodesy and Astrometry (IVS) (Schlüter and Behrend 2007) and all its components for providing VLBI data. The maps were drawn with the Generic Mapping Tool (Wessel and Smith 1998). Hana Krásná works within FWF-Project P23143 (Integrated VLBI) and Tobias Nilsson within DFG-Project SCHU 1103/3-2 (Earth Rotation and Global Dynamic Processes, Forschergruppe FOR584). The authors would like to thank the reviewers for their constructive comments.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Hana Krásná(née Spicakova)
    • 1
    Email author
  • Johannes Böhm
    • 1
  • Lucia Plank
    • 1
  • Tobias Nilsson
    • 2
  • Harald Schuh
    • 2
  1. 1.Institute of Geodesy and GeophysicsVienna University of TechnologyWienAustria
  2. 2.Department Geodesy and Remote SensingHelmholtz-Zentrum Potsdam, DeutschesGeoForschungsZentrum GFZPotsdamGermany

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