Yara is one of the last doctoral students from the Mathematical and Physical Geodesy (MPG) group led by Prof. Rothacher.
During her doctoral studies she was co-supervised by Prof. Markus Rothacher and Dr. John Clinton and worked in close collaboration with Prof. Eleni Chatzi, a rare collaboration between Geodesy, Seismology and Structural Engineering.
In her thesis, Yara investigated two different methods, a linear Kalman filter and an Unscented Kalman filter, to fuse acceleration data, GNSS positions and rotation measurements for the two applications - seismic ground motion and structural motion tracking. This allows to recover the motion of the ground or a structure in near real time for a broad frequency range, as pure rotation and pure translation components. Her thesis ‘Next Generation Monitoring of Strong Ground Motions and Structural Vibrations - Combining Accelerometer, GNSS and Rotation Sensors' additionally investigates the application of using a rotational sensor in addition to an accelerometer at a single site for structural characterization. By taking advantage of the high information content at a single point, it is possible for the first time to characterise a building in terms of modal frequency and 6 component mode shape for the fundamental modes.
After the doctoral defense, there was a nice apéro with the examination committee, colleagues, and family to celebrate Yara's achievement.