1. Institute of Geospatial Information, Information Engineering University, Zhengzhou 450001, China
2. College of Big Data and Basic Sciences, Shandong Institute of Petroleum and Chemical Technology, Dongying 257000, China
3. PLA Unit 31016, Beijing 100088, China
4. Central South Exploration & Foundation Engineering Co., Ltd., Wuhan 430081, China
5. Wuhan Kedao Geographical Information Engineering Co., Ltd., Wuhan 430081, China