At the invitation of Faculty of Geosciences and Environmental Engineering, Prof. Xu Guochang of Harbin Institute of Technology (Shenzhen), Prof. He Xiufeng of Hohai University, Prof. Zhang Xiaohong of Wuhan University and Prof. Xu Tianhe of Shandong University visited the faculty on November 23, who respectively made academic reports titled "Industrialization Development of Navigation Satellite Remote Sensing Technology", "Integrated BDS/GNSS and InSAR Technology for Landslide Disaster Monitoring", "Enhanced GNSS Precise Point Positioning Technology and Its Application" and "Key Technology of Underwater High Precision Navigation and Positioning". Executive Dean Liu Guoxiang and Professor Li Zhilin extended a warm welcome to the experts' visit, and Deputy Dean Zhu Jun presided over the academic briefing. Professor Wen Yuanlan and teacher Zhang Zhetao of Hohai University attended the symposium. After the symposium, the attending experts exchanged ideas with our teachers and students on discipline-related issues, and gave detailed answers to their questions. Backbone teachers of the Department of Surveying and Mapping, including Yuan Linguo, Zhou Letao, Feng Wei, Zhang Rui and Yin Gaofei, also participated in the academic symposium.