Graduation of Zhibo Wen

We congratulate Zhibo Wen for his successful PhD defense on October 18, 2017. The topic of his dissertation is "Bias Estimation for Precise Point Positioning".

The picture shows Zhibo with his "Doktorhut" and his examination committee. From left to right: Prof. B. Hofmann-Wellenhof, Z. Wen, and Prof. C. Günther.