The K-band Geodesy and Earth Orientation Parameters (EOP) VLBI Program focuses on the estimation of precise antenna coordinates and EOP from the K-band VLBI sessions. In particular, the global adjustment of the available K-band sessions allows the estimation of the station positions of astronomical VLBI telescopes, which do not participate in the usual geodetic observing sessions, in the International Terrestrial Reference Frame (ITRF). In addition, estimated time series of telescope positions that have a dense series of observations in the classical S/X band (such as VLBA), can be studied for possible systematic effects. The growing potential for K-band geodesy lies in the increasing number of telescopes joining the project that will allow all five EOP to be estimated from a global terrestrial network.

Under our K-band Geodesy and EOP VLBI Program we aim to make K-band geodetic products such as EOP and station positions (e.g. Krásná et al., 2022) available to the geodetic community, for multi-frequency and multi-technique comparisons and combination approaches. Station positions are also used to determine precise geodetic coordinates for non-geodetic (non S/X-band) antennas (e.g. Gomez et al., 2021).