Li Zhang, Daqing Ge, China Aero Geophysical Survey and Remote Sensing Center for Natural Resources, China; Jie Dong, School of Remote Sensing and Information Engineering, Wuhan University, China; Xiangxing Wan, Bin Liu, Yu Wang, China Aero Geophysical Survey and Remote Sensing Center for Natural Resources, China; Lu Zhang, Mingsheng Liao, State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, China; Yangyang Chen, China Aero Geophysical Survey and Remote Sensing Center for Natural Resources, China