Geodesy

Martin Sehnal

Martin works at the Federal Office of Metrology and Surveying (BEV) in Vienna, Austria. In addition to his GNSS (Global Navigation Satellite Systems) activities in one of the EUREF (Regional Reference Frame IAG Sub-Commission for Europe) analysis and data centers, he acts as the director of the GGOS (Global Geodetic Observing System) Coordination Office to ensures optimal coordination of the activities of the various GGOS components and to manage GGOS outreach activities.

Geodetic Data and Products – Idea of a Central Access Point

Martin Sehnal and edited by Rebekka Steffen April 3, 2023

The services of the International Association of Geodesy (IAG) provide very important and valuable geodetic data, information, and data products that are increasingly relevant for Earth System research, including monitoring of global change phenomena and a wide range of diverse applications such as satellite navigation, surveying, mapping, engineering, geospatial information systems, and so ...[Read More]

The comprehensive Geodetic Information Portal of GGOS

Martin Sehnal, edited by Rebekka Steffen and Andreas Kvas (Editor) June 13, 2022

Global Geodetic Observing System (GGOS)

The Global Geodetic Observing System (GGOS) of the International Association of Geodesy (IAG) is a collaborative contribution of the global geodesy community to the observation and monitoring of the Earth System. Geodesy is the science of determining the shape of the Earth, its gravity field, and its rotation as functions of time. Essential to reaching this goal are stable and consistent geodetic ...[Read More]