Considering a Priori Correlations in the IVS Combined EOP Series

摘要

The current combination of EOP time series actually implies a violation of the basic rule that the same data cannot be used twice in an adjustment process. This fact is presently neglected by treating the input data of the IVS Analysis Centers as "new" or independent data. However, this deficiency can be mitigated by introducing proper correlation coefficients between the Analysis Centers. Different approaches for deriving such correlations as well as results are presented in this paper.