1. Professor, College of Aerospace Engineering, Nanjing Univ. of Aeronautics and Astronautics, Nanjing 210016, China (corresponding author).
2. Associate Professor, Dept. of Civil Engineering, Hong Kong Univ. of Science and Technology, Clear Water Bay, Kowloon, Hong Kong.
3. Associate Professor, M.IEEE, Dept. of Electrical and Electronic Engineering, Hong Kong Univ. of Science and Technology, Clear Water Bay, Kowloon, Hong Kong.