We are pleased to announce that our colleague Tobias Bollian defended his doctoral thesis last Friday, on 25 October 2019, at Karlsruhe Institute of Technology (KIT) with great success! His thesis "Digital Beamforming for Radio Frequency Interference Suppression in Synthetic Aperture Radar" is the result of a cooperation with the Goddard Space Flight Center (GSFC) of NASA . Congratulations from all colleagues, Tobias!