Contributions on the following topics are welcome:
Importance of reference frames for Earth sciences – Essential geodetic variables, UN-GGCE, GGOS, geodynamics, global change phenomena.
Theory of reference systems and frames – Celestial reference system/frame, terrestrial reference system/frame, fundamental constants and geophysical background models, height reference frames methodologies, Earth rotation, stochastic modelling, optimisation, coordinate representation, geodetic datum parameters, apparent geocenter motion.
National and regional reference frames in deformation zones – Kinematic reference frames, height reference frames, coordinate transformation, standards, real-time applications, GIS implementation.
Systematic errors and reference frame consistency – Consistency between celestial and terrestrial reference frames, consistency between global and regional/national frames, comparison of reference frame realisations, systematics of space-geodetic techniques, IERS Conventions, Earth orientation.
Development and prospects for optimal geodetic ground-based infrastructure – GGOS core sites, simulations, instrumental developments, local tie automation, atmospheric ties, clock ties, capacity development.
Integration of space-based co-locations for enhanced reference frames – Co-location in space, Genesis, precise orbit determination based on multiple observation techniques, data combination, simulations.
Lunar and planetary reference systems and frames – Lunar reference frames, time systems, interoperability between cislunar missions, lunar geoid and rotation, geodetic and navigation systems for the Moon, observation techniques for extra-terrestrial reference system realisations.
Abstracts must be submitted before 15 October 2025. Abstracts received after the deadline will not be accepted and will not be included in the final programme of the conference. Authors will be informed of the acceptance/rejection of their abstract by email by 15 November 2025. By submitting an abstract, the author or one of the authors of a joint work is required to complete the online registration before 15 December 2025. If no registration has been received by that date for one of the authors of the abstract, it will not be included in the meeting programme. If authors know that their paper will not be presented, they are asked to withdraw their abstract as soon as possible (by contacting refag-uaw-2026@tum.de).
Participants are invited to submit their papers to the IAG Symposia Series, published by Springer. The IAG Symposia Series is published Open Access, and free of charge to the authors. The cost of publication is borne by the IAG. All presentations, poster and oral, are eligible. All Symposia Series volumes are peer reviewed and submitted for indexing.
Please note that a non-refundable abstract processing fee (APC) of €40 is charged for each abstract submitted.
No more than one abstract can be submitted by the same first author.
Abstracts cannot be submitted by fax or email.
When submitting an abstract, authors are required to provide the following information:
Title
Author(s)
Affiliation(s)
Main body of the abstract (up to 500 words).
Keywords (please include 3–5 keywords).
Topic (select 1 out of 7 REFAG2026 topics)
Presentation preference (oral/poster)
Intention to submit a paper to the IAG Symposia Series (yes/no)