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An expanded set of Satellite Laser Ranging (SLR) station positions and velocities aligned with the International Terrestrial Reference Frame 2020 (ITRF2020). The model includes historical sites not in the official ITRF2020 solution and recently installed sites operational from 2022. It is maintained by NASA's Crustal Dynamics Data Information System (CDDIS) as an extension of the ITRF2020 framework.
Users must visit the official ITRS website for correction files and software to apply post-seismic deformation (PSD) adjustments to the 'mean' positions provided. Corrections for events like earthquakes must be applied cumulatively by the user after linear propagation.