Mingjun Ouyang received his master's degree from the University of Chinese Academy of Sciences in 2018, and served as GNSS Algorithm Engineer in Hi-Target surveying and mapping instruments from 2018 to 2019. He is currently pursuing a Ph.D. degree in communication engineering at the College of Electronics and Communication Engineering, Sun Yat-Sen University, China. His current research interests include GNSS precise positioning, GNSS precise time and frequency transfer, GNSS fusion inertial navigation algorithms, and software development.