On June 13, the excursion to the Geodetic Observatory Wettzell organised by the Vienna VLBI Group took place. Students and some staff members participated in the trip to the Bavarian Forest. At the observatory, we were able to inspect three VLBI antennas, two SLR/LLR systems, many GNSS antennas and a DORIS beacon. Moreover, we were […]
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The new-generation geodetic radio telescopes observe two orthogonal linear polarization directions. Calibration of the gain differences between the two polarizers is necessary to maximize the signal-to-noise ratio of observations. This study investigates these cross-polarization gain differences and their temporal evolution for selected antennas. Check it out!
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The General Assembly 2024 of the European Geosciences Union (EGU) took place in Vienna from April 14th to 19th. The Vienna VLBI Group proudly contributed through the following presentations and posters: Benefits for the terrestrial reference frame with VLBI observations to Genesis (Johannes Böhm et al.) Atmospheric excitation of the annual wobble over the 21st-century […]
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The 13th General Meeting of the International VLBI Service for Geodesy and Astrometry (IVS) took place from 4 to 9 March 2024 at the Tsukuba Congress Center, Japan. The following topics were presented by our group on-site: Geodetic analysis of K band VLBI observations until 2024.0 (Hana Krásná et al.) Q band (43 GHz) celestial […]
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A paper on the optimal distribution of VLBI transmitters in the Galileo space segment for frame ties (simulation study) has been published in Earth, Planets and Space. Check it out!
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A paper on the importance of accurate pole and station coordinates for the determination of UT1 with VLBI Intensive sessions (simulation study) has been published in the Journal of Geodesy. Check it out!
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Jakob attended the “15th DiFX Users and Developers Meeting” in Socorro, New Mexico, USA, from September 11 to 15, 2023. This annual meeting is for the future planning, improvement, and documentation of the high-performance DiFX software. The Vienna Correlation Center uses DiFX in its operational and scientific work to process (correlate) raw VLBI data. The […]
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A paper on the computation of global reference frames from very long baseline interferometry (VLBI) observations at the Vienna International VLBI Service for Geodesy and Astrometry (IVS) Analysis Center (VIE) has been published in A&A (here).
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In the week of 11 to 15 June 2023 the 26th European VLBI Group for Geodesy and Astrometry (EVGA) Working Meeting took place in Bad Kötzting, Germany, near the collocation station Wettzell. The Vienna VLBI Group participated with the following presentations: Earth orientation parameters estimated from recent Australian mixed-mode and Southern Intensive sessions (Sigrid Böhm […]
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The 12th IVS Technical Operations Workshop (TOW) took place from April 30 through May 4 2023 at MIT Haystack Observatory in Westford, Massachussetts, USA. It was directly followed by a Correlator Workshop on May 4-5. Frédéric Jaron gave a lecture on the application of PolConvert to geodetic VLBI (VGOS) data at the TOW (see the […]
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