1. School of Civil Aviation, Northwestern Polytechnical University (NPU), Xi'an, People's Republic of China
2. Rescarch & Development Institute of NPU in Shenzhen, Shenzhen, People's Republic of China
3. Yangtze River Delta Research Institute of NPU, Taicang, People's Republic of China
4. Shandong Key Laboratory of Industrial Control Technology, School of Automation, Qingdao University, Qingdao, People's Republic of China
5. School of Information & Electronics, Beijing Institute of Technology, Beijing, People's Republic of China