1. National Space Science Center, Chinese Academy of Sciences, Beijing 100190, China
2. Beijing Key Laboratory of Space Environment Exploration, Beijing 100190, China
3. Key Laboratory of Space Weather, National Satellite Meteorological Center, China Meteorological Administration, Beijing 100081, China
4. Innovation Center for FengYun Meteorological Satellite (FYSIC), Beijing 100081, China
5. Shanghai Institute of Satellites Engineering, Shanghai 201109, China