The objective of this web site is to distribute the International Terrestrial Reference Frame (ITRF) products. ITRF94 , ITRF96 , ITRF97 , ITRF2000 , ITRF2005 , ITRF2008 , ITRF2014 , ITRF2020 and ITRF2020-u2023 solutions are available for download.

Based on completely reprocessed solutions of the four techniques, the ITRF2020 is expected to be an improved solution compared to ITF2014. A number of innovations were introduced in the ITRF2020 processing, including: Post-Seismic Deformation (PSD) models for stations subject to major earthquakes were determined by fitting GNSS /IGS data.

An International Terrestrial Reference Frame (ITRF) is a realization of the ITRS. Its origin is at the center of mass of the whole earth including the oceans and atmosphere. New ITRF solutions are produced every few years, using the latest mathematical and surveying techniques to attempt to realize the ITRS as precisely as possible.

ITRF solutions available here consist in sets of station positions and velocities with their variance/covariance matrices. Since the release of the ITRF2005, EOPs have simultaneously been combined with station coordinates.

The objective of this web site is to distribute the International Terrestrial Reference Frame (ITRF) products. ITRF94, ITRF96, ITRF97, ITRF2000, ITRF2005, ITRF2008 and ITRF2014 solutions are available for download. It also contains the description and list of all the IERS stations.

ITRF is the basis for modern national geodetic systems and the metrological basis for any position based information, including mapping, 3D modeling, and GIS.

Oct 30, 2023 · Depuis 1985, l’IGN calcule le repère international de référence terrestre (ITRF) au profit de toute la communauté scientifique. Ce repère permet de déterminer la montée du niveau de la mer, les mouvements des plaques tectoniques, les déplacements provoqués par les séismes, la fonte des calottes polaires ou l’élévation des sols.

ITRF and Science Applications • Sea level variability in space and time – An origin Z-drift of 2 mm/yr ==> errors in satellite altimetry data: • up to 0.3 mm/yr on global mean sea level • up to 1.8 mm/yr on regional sea level at high latitudes – A scale drift of 0.1 ppb/yr ==> drift up to 0.6 mm/yr in

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.

ITRF solutions available here consist in sets of station positions and velocities with their variance/covariance matrices. Recently with the release of the ITRF2005 , Earth Orientation Parameters (EOPs) have simultaneously been combined with station coordinates.