1. College of Mechanical and Control Engineering, Guangxi Key Laboratory of Spatial Information and Geomatics, College of Earth Sciences, College of Geomatics and Geoinformation, Guilin University of Technology, Guilin, China
2. College of Mechanical and Control Engineering and Guangxi Key Laboratory of Spatial Information and Geomatics, Guilin University of Technology, Guilin, China
3. College of Physics and Electronic Information Engineering, Guilin University of Technology, Guilin, China
4. College of Geomatics and Geoinformation, Guilin University of Technology, Guilin, China
5. College of Earth Sciences, Guilin University of Technology, Guilin, China