Report on New VGOS Frequency Sequences Test Observations
Paper in proceeding, 2025
The IVS VGOS Technical Committee (IVS VTC) discussed several times on how to maximize the benefits of VGOS for geodesy and astrometry. Unused potential for improvementwas identified in (a) increasing the synthesized bandwidth per VGOS observing band from 480 to 1024 MHz, and (b) distributing the four VGOS frequency bands between 3 and 14 GHz instead of only up to 10.6 GHz as is currently the case. In order to demonstrate the feasibility and possible benefits by using that potential, a series of fringe tests and test sessions were carried out in late 2024, and further tests were performed in early 2025. The results of these tests are expected to provide important input to the efforts of the IVS to anchor the observed frequency channels in the ITU Radio Regulations, so that in the future more consideration could be given to VGOS radio telescopes with regard to unwanted radio radiation. To this end, the optimum VGOS frequency configurations are sought as they are to be used in the long term. We report on the performance of these sessions and present preliminary results and recommendations for suitable frequency setups, where possible.
VLBI, VGOS
Author
Simone Bernhart
Federal Agency for Cartography and Geodesy (BKG)
Reichert GmbH
Max Planck Society
Esther Azcue Infanzón
Spanish National Geographic Institute
Ruben Bolano Gonzalez
Norwegian Mapping Authority
Lim Chin Chuan
Chalmers, Space, Earth and Environment, Onsala Space Observatory
Y. K. Choi
Max Planck Society
Reichert GmbH
Federal Agency for Cartography and Geodesy (BKG)
Pablo de Vicente
Yebes Observatory
A. García-Castellano
Red Atlántica de Estaciones Geodinámicas y Espaciales (RAEGE)
Susana García Espada
Norwegian Mapping Authority
J. González García
Yebes Observatory
Rüdiger Haas
Chalmers, Space, Earth and Environment, Onsala Space Observatory
Hayo Hase
Federal Agency for Cartography and Geodesy (BKG)
Frédéric Jaron
Chalmers, Space, Earth and Environment, Onsala Space Observatory
J. A. López-Pérez
Yebes Observatory
Jamie McCallum
University of Tasmania
Lucia McCallum
University of Tasmania
M. C. S. Moreira
Red Atlántica de Estaciones Geodinámicas y Espaciales (RAEGE)
Bill Petrachenko
Natural Resources Canada
C. Plötz
Federal Agency for Cartography and Geodesy (BKG)
Jonathan Quick
Hartebeesthoek Radio Astronomy Observatory
Matthias Schartner
Swiss Federal Institute of Technology in Zürich (ETH)
Proceedings of the 27th European VLBI Group for Geodesy and Astrometry Working Meeting
25-29
27th European VLBI Group for Geodesy and Astrometry Working Meeting
Matera, Italy,
Matera, Italy,
Driving Forces
Sustainable development
Roots
Basic sciences
Subject Categories (SSIF 2025)
Other Earth Sciences
Astronomy, Astrophysics, and Cosmology
Infrastructure
Onsala Space Observatory
DOI
10.5281/zenodo.18088484