ITRFxxxx Realisations

The International Terrestrial Reference Frame (ITRF) provides a precise, time-dependent set of 3D coordinates and velocities for globally distributed geodetic stations, realizing the International Terrestrial Reference System (ITRS). Each realization, denoted ITRFxxxx, incorporates the latest available data from GNSS, VLBI, SLR, and DORIS up to the year indicated by “xxxx,” improving accuracy and consistency. ITRF realizations are updated periodically to integrate new observations, refined models, and techniques for satellite navigation, Earth observation, and geophysical studies. Key past realizations include ITRF2020, ITRF2014, ITRF2008, ITRF2005, and ITRF2000, with earlier versions such as ITRF97, ITRF96, and ITRF94. Each new ITRF provides a more precise and stable reference frame for global positioning and monitoring of Earth system changes.

More Info: https://itrf.ign.fr/en