Gait identity identification method based on mobile phone acceleration sensor and system thereof

The invention discloses a gait identity identification method based on a mobile phone acceleration sensor and a system thereof. The method comprises the following steps of using a mobile phone acceleration sensor to collect gait data of a person to be measured in a section of journey; preprocessing the acquired gait data, carrying out linearity interpolation and filtering on triaxial acceleration signals x, y and z, and then synthesizing a resultant accelerated speed; carrying out period segmentation on a synthesized resultant accelerated speed sequence, using a DTW algorithm to filter a period, and filtering a disqualification period and acquiring a qualified period; extracting time domain and frequency domain characteristics from the qualified period, wherein the time domain characteristic includes 8 characteristics of an z-axis-direction average maximum acceleration speed, an average minimum acceleration speed, an average acceleration speed, a root mean square, a standard deviation, a peak value factor, ku