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.

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

Post-Seismic Deformation (PSD) models for stations subject to major earthquakes were determined by fitting GNSS/IGS data. The PSD models were then applied to the 3 other technique time series at earthquake colocation sites.

Oct 25, 2023 · ITRF is a set of physical points with precisely determined coordinates in a specific coordinate system (cartesian, geographic, mapping...) attached to a Terrestrial Reference System. 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. 2.

Jun 3, 2024 · Geodetic frames such as ITRF and WGS84 significantly impact surveying and mapping accuracy around the world, while local reference frames such as NAD27 provide tailored geographic references that enhance the accuracy of North American surveying/GIS projects. ITRF and WGS84 also work well for robotics, drones, and self-driving cars.

The ITRF 2014 is one of the most advanced and accessible versions of ITRF, and it works with various GNSS (Global Navigation Satellite Systems) and RTK solutions like Point One Navigation’s Polaris.

Key Points of the GNSS/IGS Contribution to the ITRF 1. Inter-Technique link : reinforcing the ITRF definition (origin, scale & orientation) 2. Determination of Post-Seismic Deformation Models 3. ITRF Plate Motion Models 4. Polar Motion 5. ITRF Access & …

What is a Reference Frame? ... Why is a Reference Frame needed? ... Geo-referencing applications : positioning, navigation, surveying... ITRF: what are the challenges & questions ? Mitigating Technique systematic errors ? Is GPS free …

Jul 1, 2023 · The International GNSS Service is a voluntary worldwide federation of institutions working together to provide high-quality, open-access GNSS data and products in support of precise positioning and other GNSS applications. ITRF. International Terrestrial Reference Frame. See “GPS, Reference Systems”.