1. School of Geophysics and Geomatics, China University of Geosciences, Wuhan, People’s Republic of China
2. School of Computer and Information Engineering, Henan University, Kaifeng, People’s Republic of China
3. State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan, People’s Republic of China
4. Satellite Application Center for Ecology and Environment, Ministry of Ecology and Environment, Beijing, People’s Republic of China