Dr. Suelynn Choy completed her PhD in 2009 in the area of GPS Precise Point Positioning (PPP) at RMIT University, Australia. Since then, she works as a full-time academic staff in the School of Mathematical and Geospatial Sciences at RMIT University. She teaches land surveying, geodesy, and GNSS navigation to undergraduate and postgraduate students. Her current research interests are in the areas of multi-GNSS PPP and using GNSS for atmospheric and ground remote sensing. Suelynn is the co-chair of the IAG (International Association of Geodesy) Working Group 4.5.2: PPP and Network RTK under Sub-Commission 4.5: High Precision GNSS Algorithms and Applications.