FG Satellitengeodäsie

2 Items

Recent Submissions
Frame tie based on VLBI observations to near-field spacecraft

Liu, Li (2019)

The objective of this work is to find approaches to realize the link of celestial reference frames, the dynamic spacecraft reference frame and the more stable and accurate International Celestial Reference Frame (ICRF), by observing the spacecraft with Very Long Baseline Interferometry (VLBI). In this work, the phase referencing observations to Global Navigation Satellite System (GNSS) satellit...

High-frequency earth rotation variations deduced from altimetry-based ocean tides

Madzak, Matthis ; Schindelegger, Michael ; Böhm, Johannes ; Bosch, Wolfgang ; Hagedoorn, Jan (2016)

A model of diurnal and semi-diurnal variations in Earth rotation parameters (ERP) is constructed based on altimetry-measured tidal heights from a multi-mission empirical ocean tide solution. Barotropic currents contributing to relative angular momentum changes are estimated for nine major tides in a global inversion algorithm that solves the two-dimensional momentum equations on a regular 0.5^\...