Amir Khodabandeh received his Ph.D. degree (with distinction) in geodesy and Global Navigation Satellite Systems (GNSS) from Curtin University of Technology, Perth, Australia. He is currently a Senior Lecturer at the Faculty of Engineering and Information Technology, University of Melbourne, Melbourne, Australia, and an Alexander von Humboldt Research Fellow. He is the Vice-President of the Inter-Commission Committee on Theory (ICCT) of the International Association of Geodesy (IAG), and Associate Editor of four premier journals: ‘GPS Solutions’, ‘Journal of Geodesy’, ‘Journal of Spatial Science’, and ‘Measurement Science and Technology’. His current research interests include estimation theory, satellite navigation, interferometric positioning, GNSS observation modelling, and GNSS quality control.
Sandra Verhagen obtained her PhD in geodesy and is now an Associate Professor at the department of Geoscience and Remote Sensing of Delft University of Technology, Delft, The Netherlands. She is an established researcher in the field of very precise and reliable positioning with Global Navigation Satellite Systems with a focus on carrier phase ambiguity resolution and quality control for applications in geoscience and geodesy. She is an active member and has held several board positions in the International Association of Geodesy, Netherlands Institute of Navigation, the Institute of Navigation (ION, USA), Netherlands Centre of Geo-information and Geodesy, Journal of GPS Solutions, and Journal of Geodesy. Currently she is the Director of Studies of the Earth, Climate and Technology (previously known as: Applied Earth Sciences) bachelor and master program. She has been teaching bachelor and master courses and coordinating fieldwork and co-developed the successful open online course (EdX) Observation Theory: Estimating the Unknown.