The project GARFIELD is a current initiative for the generation of a new high-quality gravity field solution for the Austrian region. Former solutions still show inconsistencies compared to geoid heights from GPS/leveling campaigns. With new methodical developments, these deficits should be compensated.
The final aim of GARFIELD is the generation of a highly precise gravity field for deriving
- geoid heights for a consistent height system as basis for GNSS/leveling,
- deflections of the vertical for civil engineering projects,
- gravity anomalies and disturbances for geophysical interpretations.
To achieve this goals, a proper combination of global and terrestrial data is sought. In tradition of former Austrian geoid solutions, the method of Least Squares Collocation (LSC) is chosen as baseline strategy. Alternatively, a Gauß-Markov model based on Radial Basis Functions will be implemented as complementary approach.