Advancing positioning technologies and geodetic applications
IAG Commission 4 focuses on advancing positioning, navigation, and timing (PNT) technologies, with an emphasis on GNSS and alternative systems. It aims to improve positioning integrity, sensor integration, and geodetic applications, addressing challenges such as interference and atmospheric disturbances. The commission works with various organizations to develop innovative solutions for PNT systems, geodetic remote sensing, and engineering geodesy applications.
Commission 4 – Latest News
Geodesy in Action: GNSS and InSAR Reveal Coseismic Deformation in Venezuela
July 15, 2026/by Helmut KlimaInternational Geological Congress IGC 2028 – First Circular
April 8, 2026/by adminCanadian Geophysical Union 2026 Scientific Meeting – Call for Abstracts
November 24, 2025/by adminNew IAG Publications | Geodesist’s Handbook 2024 & IAG Travaux 2023–2025
November 20, 2025/by Martin SehnalFrom Struve to Space: 11th Nordic Geodetic Commission Summer School held in Estonia 2025
September 19, 2025/by adminIAG Honors Outstanding Contributions in Geodesy: Awardees of 2023 and 2024
September 12, 2025/by adminSatellite Laser Ranging – How SLR Powers Geodesy
August 26, 2025/by adminLost Without Geodesy
July 21, 2025/by Martin SehnalCommission 4 – Upcoming Events

Workshop on GNSS Ionosphere (IWGI2026)
31 August - 3 SeptemberGerman Aerospace Center (DLR)
Frontiers of Geodetic Science (FroGS) Conference 2026
15 September - 17 SeptemberMesse München, Conference Center Nord
SIRGAS Symposium 2026
3 November - 6 NovemberFaculty of Engineering – University of the Republic.
NGGM Science and Applications Workshop 2027
24 May 2027 - 26 May 2027TBD
IUGG General Assembly 2027
16 July 2027 - 22 July 2027Incheon, South KoreaDon’t miss any News, Events or Jobs!
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IAG collaborates closely with numerous organizations within geodesy and beyond. See the list for details.
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