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.

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.

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.

ITRF is a global framework for surveying and mapping fields for increased accuracy. Let’s see how that works with real-world applications including GPS and INS applications. ITRF is the foundation for all earth science system research, including …

A physical realization of a reference system, based on the modeling standards of the ITRS. The ITRF is updated periodically by the International Earth Rotation and Reference Systems Service (IERS) to more closely approximate ITRS standards using the latest technologies.

ITRF: what are the challenges & questions ? • Improving co-location sites (the big issue) – Network configuration – Tie discrepancies – Velocity discrepancies • Mitigating Technique systematic errors ? • Improving the process of detection of discontinuities in the station position time series • Modeling site non-linear motions

• The ITRF – is more precise and accurate TRF available today – is the achievement of 30 years of international collaboration and investment of IAG services – needs to be maintained and improved...

Access to the ITRF and the IGS role • Any GNSS network can easily be expressed in the ITRF using IGS products (orbit, clocks, ERP: all expressed in the ITRF) • Publicly available: – IGS/GNSS observations (RINEX files) & Products – Geodetic/mathematical procedure to express a GNSS network in the ITRF is – Scientific software packages 14

See: ITRF The Esri Technical Support create case form will be undergoing maintenance on Saturday, October 5th, from 8AM PST to 12PM (noon) PST. Premium Support customers can call 1-888-377-4575 to receive assistance.

In this function, DGFI-TUM has been responsible since 2001 for the calculation of the International Terrestrial Reference Frame (ITRF), which is the realization of the fundamental Earth-fixed coordinate system ITRS (International Terrestrial Reference System).