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2014 | OriginalPaper | Chapter

Atmospheric Effects on VLBI-Derived Terrestrial and Celestial Reference Frames

Authors : Hana Krásná(née Spicakova), Johannes Böhm, Lucia Plank, Tobias Nilsson, Harald Schuh

Published in: Earth on the Edge: Science for a Sustainable Planet

Publisher: Springer Berlin Heidelberg

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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.

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previous chapter External Evaluation of the Terrestrial Reference Frame: Report of the Task Force of the IAG Sub-commission 1.2

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Title: Atmospheric Effects on VLBI-Derived Terrestrial and Celestial Reference Frames
Authors: Hana Krásná(née Spicakova)
Johannes Böhm
Lucia Plank
Tobias Nilsson
Harald Schuh
Publisher: Springer Berlin Heidelberg
Book: Earth on the Edge: Science for a Sustainable Planet
Print ISBN: 978-3-642-37221-6

Electronic ISBN: 978-3-642-37222-3

Copyright Year: 2014
DOI: https://doi.org/10.1007/978-3-642-37222-3_26