Miaoxin Ji , male, Han nationality, Pingdingshan, Henan Province. Doctor of Engineering, Associate Professor, Master Supervisor. His main research interests include: autonomous positioning and path planning under man-portable navigation system, cross-expansion of MEMS-grade inertial sensors and lower limb rehabilitation medicine, and gesture recognition and motion capture for special operators (special forces, firefighters, etc.). In the past three years, he has published 5 high-level SCI/EI papers as the first author (including: IEEE Transactions on Instrumentation and Measurement; IEEE Transactions on Industrial Electronics; IEEE Sensors Journal, etc.). He has been granted/accepted 4 national invention patents and 2 utility model patents. He has participated in 1 project of the National 13th Five-Year Plan, 1 project of National Natural Science Foundation of China, 2 projects of the China Postdoctoral Science Foundation, and 2 projects of Science and Technology Tackling in Henan Province. Currently, he is presiding over one National Youth Natural Science Foundation, one Science and Technology Research Project of Henan Province, and one High-Level Talent Project Fund of Henan University of Technology. Contact: 312780020@qq.com.