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Webinar: The ITRF: More Than Three Decades of Research and Development
Wednesday, 31 August 2022, 9:00
Wednesday, August 31, 2022. 9:00 AM. Webinar: The ITRF: More Than Three Decades of Research and Development. Zuheir Altamimi, Institut National de l'Information Gographique et Forestire (IGN), an Institut de Physique du Globe de Paris (IPGP), France. Sponsored by the National Geodetic Survey. More information here. Register here.
The presentation introduces the concept of reference systems and frames, but also possible reference frame representations for a deformable Earth. It also details the ITRF genesis, its development over the years, current achievement and scientific results. A particular focus will be given to the newly released ITRF2020, showing its innovations, main results and the usage of its kinematic model pertaining to the precise modeling of nonlinear station motions. Throughout the presentation, we highlight the strengths and weaknesses of the geodetic infrastructures, as well as systematic errors of the four geodetic techniques contributing to the ITRF construction: DORIS, GNSS, SLR, and VLBI. The presentation ends by briefly introducing the objectives of the United Nations Global Geospatial Information Management (UN-GGIM) initiative on the Global Geodetic Reference Frame for Sustainable development, and its responses to help improve the global geodetic infrastructure.