1. Ph.D. Candidate, National Key Laboratory of Aerospace Flight Dynamics, School of Astronautics, Northwestern Polytechnical Univ., Xi’an 710072, China.
2. Associate Professor, Dept. of Mechanical and Aerospace Engineering, Utah State Univ., Logan, UT 84322 (corresponding author).
3. Professor, National Key Laboratory of Aerospace Flight Dynamics, School of Astronautics, Northwestern Polytechnical Univ., Xi’an 710072, China.