1. Professor, Key Laboratory of Dynamics and Control of Flight Vehicle, Ministry of Education, School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, P.R. China (corresponding author).
2. Post-Doctor, School of Aerospace, Tsinghua Univ., Beijing 100083, P.R. China.
3. Professor, Key Laboratory of Dynamics and Control of Flight Vehicle, Ministry of Education, School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, P.R. China.