1. Shandong Provincial Key Laboratory of Optical Astronomy and Solar‐Terrestrial Environment, Institute of Space SciencesShandong University Weihai China
2. Laboratory of Space Environment Exploration, Center for Space Science and Applied ResearchChinese Academy of Sciences Beijing China
3. Department of Space Physics, School of Electronic InformationWuhan University Wuhan China
4. Institute of Space Physics and Applied TechnologyPeking University Beijing China