Geodetic analysis of K-band VLBI observations until 2024.0

The Very Long Baseline Array (VLBA) K-band observations were launched in 2002 with the primary objective of extending the celestial reference frame to higher frequencies for improved spacecraft navigation (Lanyi et al., 2010) and identifying additional sources in the Galactic plane region suitable for use as phase calibrators (Petrov et al., 2011). 
In 2013 a new collaboration was formed to continue observing the active galactic nuclei at 24 GHz, improving the astrometric accuracy of the K band catalogue. In 2023 new antennas joined this K band project, forming another observing network with the core being the Korean VLBI Network (KVN). The KVN sessions are irregularly augmented by the 26-meter Hartebeesthoek (HartRAO) antenna located in South Africa, the 22-meter Mopra antenna in Australia, the 22-meter Sejong geodetic antenna in Korea, and the 40-meter Yebes antenna in Spain.
We perform a geodetic analysis of the available K-band sessions, focusing on the potential of the current K-band networks for Earth orientation monitoring. We perform a global solution by adjusting the time independent parameters through a single inversion of all observations. Therefore, we provide the position of the non-geodetic antennas of the KVN and Mopra, which are aligned to the ITRF2020.

VLBI, VLBA, KVN, Mopra, K-band, EOP, station position