1. School of Information and Communications, National University of Defense Technology, Xi’an, China
2. Institute of Information and Navigation, Air Force Engineering University, Xi’an, China
3. Key Laboratory for Information Science of Electromagnetic Wave (Ministry of Education), Fudan University, Shanghai, China
4. Air Force Early Warning Academy, Wuhan, China
5. Academy of Military Sciences of PLA, Beijing, China
6. National Defense University of PLA, Beijing, China