Affiliation: | 1. Institute of Geographic Sciences and Natural Resources Research, CAS, State Key Laboratory of Re-sources and Environmental Information System, Beijing 100101, China2. University of Chinese Academy of Sciences, Beijing 100190, China3. Institute of UAV Application Research, Tianjin and CAS, Tianjin 301800, China4. The Research Center for UAV Applications and Regulation, CAS, Beijing 100101, China |