Journal of Shanghai University(Natural Science Edition) ›› 2014, Vol. 20 ›› Issue (5): 612-623.doi: 10.3969/j.issn.1007-2861.2014.01.018

• Communication and Information Engineering • Previous Articles     Next Articles

Micro-Electro-Mechanical System-Inertial Measurement Unit Indoor Pedestrian Dead Reckoning Based on Motion Classification and Step Frequency Adjustment

LI Ruo-han1, ZHANG Jin-yi1,2,3, XU De-zheng2, CHEN Xing-xiu1, XU Qin-le2   

  1. 1. Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Shanghai University, Shanghai 200072, China; 2. Microelectronic Research and Development Center, Shanghai University, Shanghai 200072, China; 3. Key Laboratory of Advanced Displays and System Application, Shanghai University,
    Shanghai 200072, China
  • Received:2014-01-02 Online:2014-10-30 Published:2014-10-30

Abstract: As a new navigation method, pedestrian dead reckoning (PDR) has attracted much attention because it is less susceptible to environmental factors. To solve the indoor PDR problem, data of a micro-electro-mechanical system-inertial measurement unit (MEMS-IMU) are collected and analyzed. A step detection algorithm is developed for motion classification and interval symmetry, and step length estimation model is established for step frequency adjustment. Thus a MEMS-IMU indoor PDR based on the motion classification and step frequency adjustment is constructed to realize accurate positioning. For different individuals, personalized step estimation model parameters are used to improve the positioning performance. Experimental results show that, the indoor PDR based on motion classification and step frequency adjustment reduces positioning error by 32.6% as compared to a traditional method using peak detection and a nonlinear model, achieving high positioning accuracy without resorting to any other positioning techniques.

Key words: indoor pedestrian dead reckoning (PDR), micro-electro-mechanical systeminertial measurement unit (MEMS-IMU), motion classification, step frequency, step length

CLC Number: