1. School of Geomatics, Anhui University of Science and Technology, Huainan 232001, China
2. State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines, Anhui University of Science and Technology, Huainan 232001, China
3. Key Laboratory of Aviation-Aerospace-Ground Cooperative Monitoring and Early Warning of Coal Mining-Induced Disasters of Anhui Higher Education Institutes, Huainan 232001, China
4. Institute of Energy, Hefei Comprehensive National Science Center, Hefei 230031, China