At the beginning of the 21st century, a significant technological change took place in
geodetic astronomy. In Zurich and Hannover, digital zenith camera systems were developed …

This paper analyses the accuracy of vertical deflection measurements carried out with the
Digital Zenith Camera System TZK2-D, an astrogeodetic state-of-the-art instrumentation …

We apply the residual terrain modeling (RTM) technique for gravity forward-modeling to
successfully improve high-resolution global gravity fields at short spatial scales in coastal …

We assess the new EGM2008 Earth gravitational model using a set of 1056 astrogeodetic
vertical deflections over parts of continental Europe. Our astrogeodetic vertical deflection …

Measurements of the sea surface height (SSH) can be carried out with GNSS aboard ships,
but data about the static draft and the hydrodynamic squat effect are necessary. This …

The tide-free release of the EGM2008 combined global geopotential model and its pre-
release PGM2007A are compared with Australian land and marine gravity observations, co …

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 …

Thanks to the latest developments in GNSS data processing the antenna heights aboard a
ship can be determined with accuracies of up to 5 cm, also in the open ocean. These heights …

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 …

Over recent years, significant progress has been made in astrogeodetic research with the
development of digital zenith camera systems (DZCSs) at ETH Zurich, Switzerland, and the …