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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In the week of 22 to 26 May 2023, the radio astronomical conference of the VLBI community took place in Bologna, Italy on the occasion of the 40th anniversary of the 32-m radio dish in Medicina. Hana Krásná was invited by the Scientific Organizing Committee to give a keynote talk about the relevance and unique […]
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In the week of 17 to 20 October 2022, the IAG International Symposium on Reference Frames for Applications in Geosciences (REFAG) took place in Thessaloniki, Greece. There have been four contributions from the Vienna VLBI group1 and one from the Federal Office of Metrology and Surveying (BEV)2: Adjustment of orbital elements of Galileo satellite arcs […]
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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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