[S-GD22] GGOS (Global Geodetic Observing System)

[SGD22-04] Strategies for Space Geodetic Data Analysis in the Coming GGOS Era

*Toshimichi OTSUBO¹, Thomas HOBIGER², Mamoru SEKIDO³, Toshihiro KUBOOKA³ (1.Hitotsubashi University, 2.Chalmers University of Technology, 3.National Institute of Information and Communications Technology)

Keywords:GGOS, Space Geodesy

The three pillars in geodesy, geometry, gravity and rotation, are expected to be more precise and accurate in the middle- to long-term plan proposed by the GGOS (Global Geodetic Observing System) project.
A number of issues are foreseen before achieving its goal, especially in a terrestrial reference frame, 1 mm accuracy in coordinates and 0.1 mm/year accuracy in velocity. It is getting more important for analysts to utilise the advantage of each geodetic technique. We point out the following issues:
- Precise modelling of satellites and quasars as well as terrestrial stations
- Combination and comparison of multiple analysis outputs
- Common parameters in multiple geodetic techniques
- Feedback from analysis centers to the global observation network
- User-friendly products and user-friendly interface