Daniel Amberger (BKG, Germany); Christian Plötz (BKG, Germany); Florian Kroner (TUM, Germany); Simon Seidl (TUM, Germany)

The DORIS beacon WEUC at the Geodetic Observatory Wettzell is in operation since 2016. Prior to this an extensive site investigation was performed to keep the radiointerferences to a viable level with respect to the VLBI operation. Over the years a successive rise of the ambient RFI level increasingly affects the VLBI receiving system, in particular the VGOS broadband feeds. In this context, a new systematic RFI survey was done. In this talk the impact of the 2 GHz DORIS emission on the TTW-1 VGOS antenna is shown and methods to mitigate these effects are discussed.

Keywords: DORIS-VLBI interferences, RFI, Geodetic Observatory Wettzell

Participation: In person