Danijel Šugar, PhD is the assistant professor at the Chair for satellite geodesy of the Faculty of Geodesy of the University of Zagreb. He received his PhD degree from the University of Zagreb in 2014. He teaches courses related to Satellite Positioning and Navigation. His field of professional and scientific interest is in GNSS, positioning, navigation, satellite geodesy, and geomagnetism. The modernization of permanent GNSS networks and the assessment of the impact it brought to the performance of services, along with highly kinematic GNSS positioning have been the focus of his research. Since 2020 he is involved in the assessment of earthquake effects by GNSS methods.