1. Department of Geophysics Graduate School of Science Tohoku University Sendai Japan
2. Institute for Space‐Earth Environmental Research Nagoya University Nagoya Japan
3. Sodankyla Geophysical Observatory University of Oulu Sodankyla Finland
4. Faculty of Mathematics and Physics Charles University Prague Czech Republic
5. Department of Space Physics Institute of Atmospheric Physics of the Czech Academy of Sciences Prague Czech Republic
6. Division of Electrical Engineering and Computer Science, Graduate School of Natural Science and Technology Kanazawa University Kanazawa Japan
7. Institute of Space and Astronautical Science JAXA Japan
8. Department of Space Systems Engineering Kyushu Institute of Technology Kitakyushu Japan