1. College of Electrical Engineering and Automation, Shandong University of Science and Technology, Qingdao, China
2. Ministry of Education, College of Intelligent Systems Science and Engineering and the Engineering Research Center of Navigation Instruments, Harbin Engineering University, Harbin, China
3. Department of Electronic and Information Systems, Shibaura Institute of Technology, Saitama, Japan
4. Department of Mechanical, Industrial and Aerospace Engineering, Concordia University, Montreal, Canada