The 9th International VLBI Technology Workshop was held from October 20 to 23, 2024 at MIT Haystack Observatory, Westford, MA, USA. The scope of this conference was hardware and software development related to VLBI technology. Frederic Jaron contributed three talks on the following topics: – A Source Structure Correction Tool for VLBI Visibility Data – […]
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The UN-GGCE Partnership Program launched in June 2024 to recognize the exceptional commitment and significant contributions Member States, universities, and organizations have made to the science of geodesy and strengthening the global geodesy supply chain. Since July 2024, TU Wien is recognized as a valued “Partner” of the UN-GGCE. This partnership acknowledges TU Wien’s expertise […]
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The 16th DiFX Users and Developers Meeting was held in Vienna from September 9 to 13, 2024. The first two days were devoted to the DiFX Users at the Federal Office of Metrology and Surveying (BEV) with many interesting presentations also from our Vienna VLBI group. The last three days were dedicated to the DiFX […]
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The 16th European VLBI Network (EVN) Symposium took place in Bonn from September 2nd to 6th, 2024. Frédéric Jaron presented a poster summarizing recent results from a project about the mitigation of source structure in geodetic VLBI. The conference was an excellent opportunity for the discussion with leading experts in the field.
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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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