Fitting gravimetric geoid models to vertical deflections
MetadataShow full item record
The final publication is available at Springer via http://link.springer.com/
Regional gravimetric geoid and quasigeoid models are now commonly fitted to GPS-levelling data, which simultaneously absorbs levelling, GPS and quasi/geoid errors due to their inseparability. We propose that independent vertical deflections are used instead, which are not affected by this inseparability problem. The formulation is set out for geoid slopes and changes in slopes. Application to 1080 astrogeodetic deflections over Australia for the AUSGeoid98 model shows that it is feasible, but the poor quality of the historical astrogeodetic deflections led to some unrealistic values.
Showing items related by title, author, creator and subject.
Voigt, C.; Denker, H.; Hirt, Christian (2007)In the context of a GOCE regional validation and combination experiment in Germany, a work package within the framework of the GOCE-GRAND II project, gravity observations, vertical deflections and GPS/levelling data are ...
Hirt, Christian; Kuhn, Michael; Claessens, Sten; Pail, R.; Seitz, K.; Gruber, T. (2014)This paper describes the computation and analysis of the Earth’s short-scale gravity field through high-resolution gravity forward modelling using the Shuttle Radar Topography Mission (SRTM) global topography model. We ...
Hirt, Christian; Denker, H.; Flury, J.; Lindau, A.; Seeber, G. (2009)In regions with a rough topography, e.g. the European Alps, the accuracy of geoid or quasigeoid models is often reduced. For the validation and accuracy assessment of gravimetric models, astronomical levelling is a ...