The work on Champ's GGM at the Astronomical Institute, University of Berne (AIUB) is led by Lars Prange (Prange et al, 2009). The team consist also Jaggi, Beutler, Dach and Roland L Mervart. Early work was implemented using Champ data set March 2002 to January 2003 (342 days). The computation is using celestial mechanic approach and make use of Eigen2 as priori gravity model
The result ~ AIUB-Champ01S is complete to degree and order 90. The accuracy is determined with comparison made against Eigen-GL04C, EGM96 and ITG Champ01 (considered the best Champ only model). AIUB then is claimed as giving the best result – proven at higher degree coefficient solution; but slightly minor problem in lower degree harmonic degree 15 to 20.
Adrian Jaggi - Bern Universitat (researchgate)
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