Research on Extraction Method of Time-Frequency Feature of Human Motion

For the problem of motion feature extraction, a method of time-frequency analysis and eigenvalue extraction by fractional Fourier transform is proposed. Collect inertial data in the process of motion by wearing 15 IMU. Analyze and compare its characteristics after the multiorder fractional Fourier transform. The results of the same motion with same order and the different motion with same order and the single motion with different order are compared. Mean value, quartile difference and extreme value difference were extracted after the multiorder fractional Fourier transform to identify and classify the motion.