Kun Li, Aerospace Information Research Institute, Chinese Academy of Sciences, China; Qijin Han, Qiongqiong Lan, Hang Zhao, Jian Zeng, Zhaopeng Xu, Zhiheng Hu, Xuewen Zhang, China Center for Resources Satellite Data and Application, China; Hong Chen, China Aero Geophysical Survey and Remote Sensing Center for Natural Resources, China; Yonggang Qian, Aerospace Information Research Institute, Chinese Academy of Sciences, China