Robust determination of station positions and Earth orientation parameters by VLBI intra-technique combination [Elektronische Ressource] / von Sarah Böckmann

Institut für Geodäsie und Geoinformation der Universität BonnRobust determination of station positionsand Earth orientation parameters byVLBI intra-technique combinationInaugural–Dissertation zurErlangung des akademischen GradesDoktor–Ingenieur (Dr.–Ing.)der Landwirtschaftlichen Fakultätder Rheinischen Friedrich–Wilhelms–Universitätzu Bonnvorgelegt am 6. September 2010 vonDipl.–Ing. Sarah Böckmannaus MünsterReferent: Priv.-Doz. Dr.-Ing. Axel NothnagelKorreferenten: Univ.-Prof. Dr.-Ing. Heiner Kuhlmann Dr.phil.nat. Markus RothacherTag der mündlichen Prüfung: 12. Oktober 2010Publikation: Diese Dissertation ist auf dem Hochschulschriftenserver der ULBBonn http://hss.ulb.uni-bonn.de/diss_online elektronisch publi-ziert. (Erscheinungsjahr 2010)SummaryIn this thesis, it is shown that combining contributions of different VLBI analysis centers, a so called intra-technique combination, improves the robustness and stability of the final VLBI results. For this purpose, arefined combination method has been developed which is in many theoretical and practical aspects superiorto combination approaches currently used for comparable geodetic combination tasks. For example, datum-free normal equation systems are used as input, which ensure that the contributions are not deformedby any constraints at all, and the same underlying terrestrial reference frame can be applied during thecombination process.