1. School of Electrical and Automation Engineering and the State Key Laboratory of Performance Monitoring Protecting of Rail Transit Infrastructure, East China Jiaotong University, Nanchang, China
2. School of Electrical and Automation Engineering, East China Jiaotong University, Nanchang, China
3. College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, China