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Permanent Monitoring of the Reference Point of the 20m Radio Telescope WettzellTo achieve the goals of the VLBI2010 project and the Global Geodetic Observing System (GGOS), an automated monitoring of the reference points of the various geodetic space techniques, including Very Long Baseline Interferometry (VLBI), is desirable. The resulting permanent monitoring of the local-tie vectors at co-location stations is essential to obtain the sub-millimeter level in the combinations. For this reason a monitoring system was installed at the Geodetic Observatory Wettzell by the Geodetic Institute of the University of Karlsruhe (GIK) to observe the 20m VLBI radio telescope from May to August 2009. A specially developed software from GIK collected data from automated total station measurements, meteorological sensors, and sensors in the telescope monument (e.g., Invar cable data). A real-time visualization directly offered a live view of the measurements during the regular observation operations. Additional scintillometer measurements allowed refraction corrections during the post-processing. This project is one of the first feasibility studies aimed at determining significant deformations of the VLBI antenna due to, for instance, changes in temperature.
Document ID
20110011864
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Neidhardt, Alexander
(Forschungseinrichtung Satellitengeodaesie (FENG) Wettzell, Germany)
Losler, Michael
(Karlsruhe Univ. Germany)
Eschelbach, Cornelia
(Karlsruhe Univ. Germany)
Schenk, Andreas
(Karlsruhe Univ. Germany)
Date Acquired
August 25, 2013
Publication Date
December 1, 2010
Publication Information
Publication: Proceedings of the Sixth General Meeting of the International VLBI Service for Geodesy and Astrometry
Subject Category
Geophysics
Distribution Limits
Public
Copyright
Public Use Permitted.
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