1. Department of Electronics and Nanoengineering, School of Electrical Engineering; Aalto University; Espoo Finland
2. Swedish Institute of Space Physics; Uppsala Sweden
3. Department of Automatic Control and Systems Engineering; University of Sheffield; Sheffield UK
4. Harbin Institute of Technology; Shenzhen China
5. Space Research Institute; Austrian Academy of Sciences; Graz Austria
6. Department of Physics; University of Helsinki; Helsinki Finland
7. Swedish Institute of Space Physics; Kiruna Sweden
8. Mullard Space Science Laboratory; University College London; London UK