ITRF2020-u2023

ITRF2020-u2023 is the first ITRF020 update, generated by adding three years (2021.0 – 2024.0) of data after the end of the ITRF2020 input data. The four Technique Centers (IDS, IGS, ILRS, IVS) who provided three years of extended time series of station positions and Earth Orientation Parameters (EOPs) were asked to use the same models and strategies as in their contributions to ITRF2020. ITRF2020-u2023 keeps the same frame parameters (origin, scale and orientation) as ITRF2020. This is intended to avoid any “datum” change in user applications. The computation strategy of ITRF2020-u2023 is identical to that of ITRF2020.