Under the umbrella of the International Association of Geodesy (IAG), the IAG’s Global Geodetic Observing System (GGOS) and the International Earth Rotation and Reference Systems Service (IERS) periodically hold unified analysis workshops to discuss current issues in geodetic data analysis and the determination of geodetic reference frames, as well as the provision of reliable geodetic products for use in other geosciences and by society. In 2026, the Unified Analysis Workshop (UAW) was hosted by the Technical University of Munich (TUM) in Munich, Germany, on 5th and 6th March 2026. The presentations and outcomes of the discussions are presented below according to the different UAW sessions.

 

Workshop objectives, format and attendees

• UAW2026 Pre-meeting reading materials

 

IERS Conventions updates

• IERS Conventions v2.0.0 | Sharyl Byran, Nick Stamatakos, Michael Efroimsky, Patrick Charlot, Alet de Witt, Jean Souchay, Frank Lemoine, Dennis McCarthy, José Ferrandiz, John Ries, Srinivas Bettadpur, Sigrid Böhm, Johannes Böhm,
• Review of Changes to be Implemented for IERS Conventions Chapter 1: General Definitions and Numerical Standards | Nick Stamatakos, Detlef Angermann, Dennis McCarthy
• The IERS Rapid Service / Prediction Center: Mission, Challenges, and Developments | Maria Davis, Sharyl Byram
• Discussion on IERS conventions | Christian Bizouard

Outcomes | IERS Conventions updates

 

What do we need from the next generation of geophysical models, and their future use in geodetic data analysis and reference frame?

• What do we need from the next generation of geophysical models, and their future use in geodetic data analysis and reference frame? | Jeff Freymueller
• Typical “environmental” corrections in geodesy processing | Jean-Paul Boy
• Background models in Least Squares Adjustment (LSA) | Torsten Mayer-Gürr
• Consistency of pole tide and GIA corrections | A. Couhert, M. Rousselet, B. Meyssignac

Outcomes | What do we need from the next generation of geophysical models, and their future use in geodetic data analysis and reference frame?

 

Challenges in the new ITRF operational updates

• Challenges in the new ITRF operational updates: Points for discussion | Zuheir Altamimi
• ITRS Combination Center at IGN | Z. Altamimi, P. Rebischung, X. Collilieux, L. Métivier, J. Barnéoud, M. de La Serve
• ITRS Combination Center at DGFI-TUM | Manuela Seitz
• C04 series update in the current ITRF | Christian Bizouard
• ITRF Transition for IERS Rapid Service / Prediction Center (RS/PC) |  Nick Stamatakos, Sharyl Byram, Maria Davis
• Challenges in the new ITRF operational updates IDS | Petr Štěpánek, Guilhem Moreaux, Frank G. Lemoine
• IGS contributions to ITRF-updates | Tom Herring
• ILRS ASC reprocessing for ITRF2020-u2025 | Mathis Bloßfeld
• IVS perspective on ITRF updates | Benedikt Soja, Alexander Kehm

Outcomes | Challenges in the new ITRF operational updates

 

Challenges and opportunities in analysing Genesis data

• Challenges and opportunities in analyzing Genesis data | Introduction | Johannes Böhm, Urs Hugentobler, Susanne Glaser, Hanane Ait-Lakbir
• Joint Pilot Projects for the Analysis of Genesis Observations | Johannes Böhm, Urs Hugentobler, Susanne Glaser, Hanane Ait-Lakbir
• Orbit Combination at the Normal Equation Level | Johannes Böhm, Urs Hugentobler, Susanne Glaser, Hanane Ait-Lakbir
• Discussion
• Summary

Outcomes | Challenges and opportunities in analysing Genesis data

 

Resilience of IAG Scientific Services

• Resilience of IAG Scientific Services | Introduction | Richard Gross, Hansjörg Kutterer

Outcomes | Resilience of IAG Scientific Services

 

Availability of geodetic products for the Essential Geodetic Variables

• Availability of geodetic products for the Essential Geodetic Variables | Introduction | Laura Sánchez, Detlef Angermann, Thomas Gruber

Outcomes | Availability of geodetic products for the Essential Geodetic Variables

 

Open session topic (a) Gravitational deformations of VLBI receiving units

• Resolution on Modelling Gravity-Induced Deformations of the Radio Telescope Receiving Unit | Cornelia Eschelbach

Outcomes | Resolution on Modelling Gravity-Induced Deformations of the Radio Telescope Receiving Unit

 

Open session topic (b) Correlations in atmospheric parameter estimation

• Correlations in Atmospheric Parameter Estimation | Introduction | Benedikt Soja
• Stochastic model in VLBI work done at TU Wien | Krásná Hana
• Tropospheric turbulence | Minghui Xu

 

Open session topic (c) Increased automation in geodetic data analysis

• Increased Automation in Geodetic Data Analysis | Benedikt Soja