Magnetic distortion in motion labs, implications for validating inertial magnetic sensors.

@article{Vries2009MagneticDI,
  title={Magnetic distortion in motion labs, implications for validating inertial magnetic sensors.},
  author={Wiebe H K de Vries and H. E. J. Veeger and Chris T. M. Baten and Frans C. T. van der Helm},
  journal={Gait & posture},
  year={2009},
  volume={29 4},
  pages={535-41}
}
BACKGROUND Ambulatory 3D orientation estimation with Inertial Magnetic Sensor Units (IMU's) use the earth magnetic field. The magnitude of distortion in orientation in a standard equipped motion lab and its effect on the accuracy of the orientation estimation with IMU's is addressed. METHODS Orientations of the earth magnetic field vectors were expressed in the laboratory's reference frame. The effect of a distorted earth magnetic field on orientation estimation with IMU's (using both a… CONTINUE READING