New Progress in VLBI tracking of GNSS satellites at GFZ

The topic VLBI tracking of GNSS satellites has emerged lately as a new way for linking of the dynamic reference frame realized by GNSS satellites to the ICRF. Recently, a few related experiments and studies have been carried out to test and further develop this technique. In this contribution we presented preliminary results of post-correlation with the observations from a new VLBI tracking of a GLONASS satellite experiment performed by the telescopes Wettzell and Onsala85 successfully on Jan., 2013. To determine and evaluate ability of these observations, the appropriate way to fringe fit the correlation data from artificial signal were studied and some graphs after calibrations from AIPS were analyzed. The clock parameters, which remain in the non-dispersive delay residuals from 4 IFs, were fitted as well.