1. Associate Professor, School of Geographic and Oceanographic Sciences, Nanjing Univ., Nanjing 210023, China (corresponding author).
2. Assistant Engineer, Fujian Institute of Surveying and Mapping, Fuzhou 350000, China.
3. Assistant Engineer, Nanjing Institute of Surveying, Mapping and Geotechnical Investigation, Co., Ltd., 88 Chuangyi Rd., Nanjing 210019, China.
4. Consulting Manager, Research and Development Operations Department, Fuzhou Branch of the Smart City Research Institute of China Electronics Technology Group Corporation, Fuzhou 350000, China.
5. Assistant Professor, School of Geographic and Oceanographic Sciences, Nanjing Univ., Nanjing 210023, China.
6. Professor, School of Geographic and Oceanographic Sciences, Nanjing Univ., Nanjing 210023, China.