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The Long Term Stability of VLBI Earth Orientation Measurements

Published online by Cambridge University Press:  03 August 2017

T. M. Eubanks  and
J. A. Steppe
T. M. Eubanks
Affiliation:
Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109
J. A. Steppe
Affiliation:
Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109

Abstract

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Tectonic motions will, in general, change the orientation as well as the length of baselines used in Very Long Baseline Interferometry (VLBI), and will thus cause slow divergences between Earth orientation results obtained with different VLBI networks, as well as between VLBI results and those obtained by Satellite Laser Ranging (SLR) and Lunar Laser Ranging (LLR). Such drifts (on the order of a milliarcsecond /year) are inherently interesting as well as being significant in combinations of orientation results from different sources. The geodetic study of tectonic motions is also closely connected to research into the nature and causes of systematic errors in data from the modern techniques of space geodesy. We describe both a special coordinate system found to be of use in the analysis of VLBI data and tectonic motion estimates for a VLBI baseline stretching from California to Australia.

Type
Geophysics
Information
Symposium - International Astronomical Union , Volume 129: The Impact of VLBI on Astrophysics and Geophysics , 1988 , pp. 369 - 370
Copyright
Copyright © Reidel 1988 

References

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