1. School of Geography Science and Geomatics Engineering, Suzhou University of Science and Technology, Suzhou China
2. School of Architectural and Surveying & Mapping Engineering, Jiangxi University of Science and Technology, Ganzhou, China
3. Department of Surveying and Mapping, Shandong Jintian Surveying and Mapping Geographic Information Co., Ltd, Jintian, China
4. Department of Land Surveying and Mapping Map, Institute of Guandong Province, Guangzhou, China