Verbesserung der DORIS Lösungen und Kombination mit anderen raumgeodätischen Techniken

• Antragsteller: Professor Dr. Urs Hugentobler
• Fachliche Zuordnung: Geodäsie, Photogrammetrie, Fernerkundung, Geoinformatik, Kartographie
• Förderung: Förderung von 2015 bis 2020
• Projektkennung: Deutsche Forschungsgemeinschaft (DFG) - Projektnummer 267464059

DORIS (Doppler Orbitography and Radiopositioning Integrated by Satellite) is a French Doppler satellite tracking system developed for precise orbit determination and positioning. It is one of the space geodetic techniques contributing to the realization of the International Terrestrial Reference Frame. This project, jointly executed by Technische Universität München, Deutsches Geodätisches Forschungsinstitut and the Research Institute of Geodesy, Topography and Cartography, Czech Republic, focuses on the improvement of current DORIS solutions and on the combination of DORIS with other space geodetic techniques on both, normal equation and observation level. The major tasks targeting an improvement of DORIS products are the studies of discontinuities in DORIS-derived terrestrial scale, geocenter and station coordinates time series, on the impact of the new satellites, compensation of the South Atlantic anomaly effects and the satellite orbit modeling. The plans for the inter-technique combination target firstly the systematic comparison and combination of site-specific troposphere parameters of collocated DORIS and GNSS equipment. Secondly, the contribution of DORIS to epoch reference frames by combination with other techniques at the normal equation level will be assessed. Finally, the phase nature of DORIS observables will be exploited to assess the improvement of solutions through combination of clock corrections of collocated DORIS and GNSS equipment at the observation level. As the cable connecting DORIS beacon and GNSS oscillators is currently not implemented the last step will be performed using simulated observations.

• DFG-Verfahren: Sachbeihilfen
• Internationaler Bezug: Tschechische Republik
• Partnerorganisation: Czech Science Foundation
• Mitverantwortlich(e): Dr.-Ing. Manuela Seitz
• Kooperationspartner: Dr. Petr Stepanek, Ph.D.