A Position Tracking System Using MARG Sensors

Abstract

The objective of this thesis was to further the development of a personal position tracking system using MARG sensors. This work advanced the method by which distance and heading were calculated of an individual wearing one MARG sensor on his/her foot when moving about under normal walking conditions. Data was collected from the foot-mounted sensor while walking a straight-line path, a square path, and climbing stairs. The corresponding data from these activities was then used in a Matlab program to determine a computed position. The Matlab program employed a technique that reset the accelerometer error during the stance phase of the gait cycle. It also utilized a gait detection algorithm based on the magnitude of angular rate and the number of samples above/below threshold to establish the periods of the stance phase and the swing phase. Experimental results from various testing scenarios showed that it is feasible to track position of a person.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 2007
Accession Number
ADA475853

Entities

People

  • Miryung Um

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Biomedical
  • Materials and Manufacturing Processes
  • Sensors
  • Space

DTIC Thesaurus Topics

  • Accelerometers
  • Accuracy
  • Algorithms
  • Biomechanical Phenomena
  • Circuit Boards
  • Computer Programs
  • Computers
  • Coordinate Systems
  • Detection
  • Detectors
  • Electrical Engineering
  • Global Positioning Systems
  • Graphical User Interface
  • Magnetic Detectors
  • Mathematical Models
  • Three Dimensional
  • Virtual Reality

Readers

  • Computational Modeling and Simulation
  • Exercise and Sports Science.
  • Inertial Navigation Systems.