[1] College of Geodesy and Geomatics, Shandong University of Science and Technology, Qingdao,266590, China
[2] Satellite Application Center for Ecology and Environment, Ministry of Ecology and Environment, Beijing,100094, China
[3] Chinese Research Academy of Environmental Sciences, Beijing,100012, China
[4] College of Geoscience and Surveying Engineering, China University of Mining and Technology-Beijing, Beijing,100083, China
[5] School of Geomatics and Urban Spatial Information, Beijing University of Civil Engineering and Architecture, Beijing,100044, China