Dr Xu received his BEng and PhD degrees in network engineering and navigation guidance and control from Nanjing University of Science and Technology, China, in 2012 and 2018, respectively. Prior to his current position, Research Assistant Professor with Interdisciplinary Division of Aeronautical and Aviation Engineering (AAE), The Hong Kong Polytechnic University, he was a Postdoctoral Fellow with the same institution from August 2018 to April 2020.