New DORIS-VLBI interference measurements at the Geodetic Observatory Wettzell

Thomas Klügel (BKG, Germany)

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

Event: 2026 IDS Workshop

Session: DORIS System, Network, and IDS updates

Presentation type: Oral

DOI: 10.24400/312072/i03-2026.4657

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Abstract

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.

Contribution: IDS26_s1_Klügel_DORIS-VLBIinterferenceMeasurementsAtWettzell.pdf (pdf, 2747 ko)

Corresponding author:

Thomas Klügel

BKG

Germany

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