by Hana Krásná | Nov 5, 2026 | Publication
Over the past decades, the computation of ionosphere calibrations for VLBI legacy S/X band observations and especially the derivation of effective frequencies have undergone various changes. Axel et al. assess the resulting differences in the geodetic product...
by Hana Krásná | Oct 22, 2026 | Publication
Mission Genesis of the European Space Agency has been approved for launch. Its primary goal is the enhancement of the terrestrial reference frame. In this work, Helene et al. carried out simulation studies with a global VLBI network to assess the impact of errors...
by Lisa Kern | Jun 23, 2025 | Publication
Climate change can impact Earth’s rotation speed through large-scale changes in zonal wind strength. We analyzed the future development of atmospheric angular momentum under five scenarios of differing greenhouse gas emission strengths and societal development....
by Lisa Kern | Mar 31, 2025 | Publication
An unexpected VLBI scale drift has been observed in the latest realization of the ITRS, ITRF2020, beginning shortly after epoch 2013.75 and continuing through 2021.0. A detailed analysis of the station motion model for NYALES20 (Svalbard, Norway) revealed a linear...
by Lisa Kern | May 2, 2024 | Publication
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...
by Lisa Kern | Nov 23, 2023 | Publication
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!
