The objective of this web site is to distribute the International Terrestrial Reference Frame (ITRF) products. ITRF94, ITRF96, ITRF97, ITRF2000, ITRF2005, ITRF2008, ITRF2014, ITRF2020, ITRF2020-u2023 and ITRF2020-u2024 solutions are available for download. It also contains the description and list of all the IERS stations.

• ITRS and ITRF : What are the ITRS and the ITRF?

• ITRF Products : Description of ITRF solutions, download. Relationship between ITRS realizations, transformation parameters.

• DOMES numbers : What is the use of the DOMES numbering? Request a DOMES number.

• IERS Network : The IERS network description. Download the local ties between ITRF stations.. To consult information about an ITRF point, use the search bar on top of the site.

• Get ITRF coord. : To request ITRF coordinates online for a specific set of stations at any epoch in any ITRS realization from ITRF94, you first need to make a selection of stations from the site page reachable with the site search on the top and use the "Get the ITRF coordinates of these points" button on the selected points page in tables or SINEX format.

• ITRF Mailing list, Links : Subscribe to ITRFmail, Related web pages...

Related web sites

• International Association of Geodesy

IAG International Services

• International Earth Rotation and Reference systems Service
• International DORIS Service
• International GNSS Service
• International Laser Ranging Service
• International VLBI Service

ITRS Centres

• Conventions Centre
• Earth Orientation Centre
• Global Geophysical Fluids Centre
• ICRS Centre
• Rapid Service/Prediction Centre

Contact : itrf(at)ign.fr