1. School of Electronic and InformationWuhan University Wuhan China
2. Laboratoire de Physique des PlasmasCNRS‐Ecole Polytechnique‐UPMC Palaiseau France
3. Institute of Space Science and TechnologyNanchang University Nanchang China
4. Space Science Institute, School of AstronauticsBeihang University Beijing China
5. School of Earth and Space SciencesPeking University Beijing China