As an Associated Analysis Center (AAC) of the International DORIS Service (IDS), DGFI-TUM focuses primarily on improved determination of the orbits of altimetry satellites. Highly accurate and long-term stable orbit information for these satellites is a prerequisite for the determination of the sea level and its long-term global and regional changes using satellite altimetry.
For the orbit determination with the microwave geodetic observation technique DORIS (Doppler Orbithography and Radiopositioning Integrated by Satellite), DGFI-TUM has extended its DGFI Orbit and Geodetic Parameter Estimation Software (DOGS) with current satellite macro-models and other satellite-specific information for Topex/Poseidon and the satellites of the Jason family. The parameters currently included in DGFI-TUM's DORIS orbit solutions are
Follow this link to read more about DGFI-TUM's research related to DORIS data analysis.