Kun Li, Beijing Institute of Spacecraft System Engineering, China; Jie Wang, Nanjing University of Information Science and Technology, China; Longyong Chen, Institute of Electronics, Chinese Academy of Sciences, China; Wenjian Ni, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, China; Zheng Lv, Lei Liu, Mingming Xu, Jianbo Du, Zhibin Wang, Jie Liu, Qingjun Zhang, Beijing Institute of Spacecraft System Engineering, China