• Vienna Center for VLBI

    The Vienna Center for VLBI is a joint effort by TU Wien and Austria's Federal Office of Metrology and Surveying (BEV).

  • Geodetic Very Long Baseline Interferometry

    Very Long Baseline Interferometry (VLBI) is a microwave-based technique that evolved from radio astronomy in the early 1970s. Nowadays, VLBI is a major space-geodetic technique, indispensable for geodesy.

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  • Unique Geodetic Products

    VLBI delivers unique geodetic products that play indispensable roles for science and society.

  • Where are we?

    VLBI uniquely contributes to the most precise and stable reference frames, which are fundamental for numerous applications - from navigation to global change monitoring.

  • Precise timing!

    VLBI is the only operational technique to determine the Universal Time UT1 that reflects the Earth's rotation behavior. Precisely knowing this parameter is essentiual for navigation systems, such as ESA's Galileo.

  • Extragalactic benchmarks

    Bright radio sources located at the edge of the universe - billions of light-years from Earth - serve as ultra-stable benchmarks that are observed by VLBI.


Scheduling: generating highly sophisticated VLBI observation schedules

Our new scheduling software VieSched++ smoothly connects observation planning with simulations to generate the best schedules for your specific purposes.

Scheduling Center

Correlation: Processing raw data records to derive delay observables

The VSC has the capacities to process vast amounts of raw observation data. The derived quantities are the basis for geodetic parameter estimation.

Correlation Center

Analysis: Estimation of geodetic products

Using our in-house software suite VieVS for the analysis of VLBI sessions gives us great flexibility at estimating high quality geodetic parameters.

Analysis Center

Latest News

First IVS VGOS session successfully correlated at TU Wien

First IVS VGOS session successfully correlated at TU Wien

For the first time, a 24h VGOS session of the International VLBI Service for Geodesy and Astrometry (IVS) was correlated…

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New software to simulate raw telescope data for VLBI

New software to simulate raw telescope data for VLBI

Jakob Gruber has developed software to simulate raw telescope data for VLBI (VieRDS). Interested? The software is available via Github…

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Paper on ICRF3 published in A&A

Paper on ICRF3 published in A&A

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…

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Team Members

Hana Krásná

Senior Scientist

Frédéric Jaron

Postdoc Researcher

Olivia Panzenböck

Student Assistant

Axel Nothnagel


Lisa Kern

Student Assistant

Sigrid Böhm

Senior Scientist

Helene Wolf


Jakob Gruber


Johannes Böhm


David Mayer