Professor/Doctoral Supervisor, Aerospace Information Research Institute, Chinese Academy of Sciences. His research interests include advanced SAR remote sensing, polar environment remote sensing and ecological environment remote sensing. He has presided over and participated in more than 10 projects such as national 973, 863, NSFC and SPRP projects of CAS. He is the vice chairman of Digital Polar Specialist Committee of CNISDE, Co-chairman of Environmental Change Working Group of DBAR International Science Program, the member of China-EU Expert Committee on Land and Soil, and the vice chairman of CARSA eco-meteorological Remote Sensing Committee. A total of 102 papers were published in SCI/EI. In recent 5 years, 32 SCI papers have been published, among which 1 paper was included as ESI highly cited paper. He has co-authored 4 books including Global Change Science Satellite, Cryosphere Remote Sensing, Remote Sensing Time Series: Revealing land Surface Dynamics and advanced SAR Earth Environment Observation.