A racehorse movement
modal recognition method and
system based on
centimeter-level real-
time trajectory, the method first acquires the three-dimensional coordinate sequence when the horse moves, and extracts the kinematic characteristic parameters; then judges the horse movement state, and classifies the horse
gait modal; then acquires the absolute
stride length of the horse horizontal displacement trajectory, constructs the stride /
step frequency ratio factor, and determines the corresponding normal fluctuation interval; finally, the current stride /
step frequency ratio factor of the horse is acquired and compared with the corresponding normal fluctuation interval to determine the horse
gait health state; the invention uses
centimeter-level real-time absolute position change for
modal analysis, effectively avoids false positives caused by inertial sensor nonlinear
impact and attitude
jitter, and through the construction of stride /
step frequency ratio factor and the corresponding normal fluctuation interval by sub-modal, early warning of fatigue state and precise detection of
gait abnormality are realized, and the accuracy of gait modal recognition is effectively improved.