53 Citations
EIGEN-6C4 is a static global combined gravity field model up to degree and order 2190.
It has been elaborated jointly by GFZ Potsdam and GRGS Toulouse.
The combination of the different satellite and surface data sets has been
done by a band-limited combination of normale equations (to max degree 370),
which are gererated from observation equations for the spherical harmonic
coefficients. A brief description of the applied techniques for the generation
of such a combined gravity field model is given in Shako et al. 2014. The
resulted solution to degree/order 370 has been extended to degree/order 2190 by
a block diagonal solution using the DTU10 global gravity anomaly data grid.