The installation of a VLBI transmitter on Galileo satellites would allow observing satellites besides quasars with VLBI telescopes. Three additional Dilution of Precision (DOP) factors were introduced which are representing the sensitivity of a satellite observation towards the components of the satellite position in the local orbital. These factors were used for evaluating observations to […]
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The need for stimulating global geodetic measurements with southern observatories served as a powerful motivation to launch the Southern Intensive (SI) program in 2020. The competitiveness of these SI sessions with routinely operated Intensive sessions has now been demonstrated in a paper published in Earth, Planets and Space.
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On June 30, 2022, Jakob Gruber successfully defended his PhD thesis on Raw Data Simulation and Correlation of VLBI data. After the presentation of his thesis, Jakob withstood the difficult questions from Axel Nothnagel, Jamie McCallum and Johannes Böhm. Congratulations and thanks for the nice party in Hof3! @tu_wien @geodepartment @j_boehm72
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On June 20, the excursion to the Geodetic Observatory Wettzell organised by the Vienna VLBI Group took place. This year, 34 students and 7 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. […]
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In the week of 23 to 27 May 2022 the General Assembly 2022 of the European Geosciences Union (EGU) took place in Vienna. After almost two years of pandemic, the first-ever fully hybrid EGU brought together over 7000 geoscientists from 89 countries on site and 7000 virtual attendees from 116 countries. In sum, almost 12500 […]
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On September 30, 2021, Michal Zajaček from the Masaryk University in Brno visited TU Wien and gave a seminar talk on short-term jet precession in VLBI data. It was very interesting to see where astrophysics and geodesy have common topics and goals.
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For the first time, a 24h VGOS session of the International VLBI Service for Geodesy and Astrometry (IVS) was correlated at TU Wien. Eight globally distributed radio telescopes participated in session VO1021 on January 21, 2021, each observing quasars with a data rate of 8 Gbit/s. In total, more than 220 TByte had to be […]
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Jakob Gruber has developed software to simulate raw telescope data for VLBI (VieRDS). Interested? The software is available via Github and the description with the mathematical background has just gone online as open access paper. @IVS_OOC
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What a nice Christmas present: the paper on the ICRF3 is finally published in A&A: https://doi.org/10.1051/0004-6361/202038368 . Wien is very happy and honored to have been part of this great achievement! @IVS_OOC @tu_wien
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Do not miss the December 2020 issue of the IVS Newsletter! @IVS_OOC It features the Celestial Reference Frame with great interviews by “CRF veterans”. It also introduces the joint Operation Center by Wettzell, Zürich, and Wien. https://ivscc.gsfc.nasa.gov/publications/newsletter/issue58.pdf
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