1. Department of Electrical Engineering and Center for Space Physics Boston University Bosto MA USA
2. SRI International Menlo Park CA USA
3. William B. Hanson Center for Space Sciences The University of Texas at Dallas Dallas TX USA
4. Embry‐Riddle Aeronautical University Daytona Beach FL USA
5. Jet Propulsion Laboratory California Institute of Technology Pasadena CA USA
6. Department of Communication Engineering and Informatics The University of Electro‐Communications Chofu Japan
7. Institute for Space‐Earth Environmental Research Nagoya University Nagoya Japan