Calibration of a magnetic tracking device and long range transmitter using locally linear fits


by J.S. Day (Queen's University), D.J. Murdoch (Queen's University) and G.A. Dumas (Queen's University)


Magnetic tracking devices are commonly used in biomechanics and kinesiology. Use of such systems is restrained both by limitations in system accuracy when a large volume of operation is desired and by their inherent sensitivity to large metallic objects. Use of a long range transmitters can improve performance with regards to the first limitation, but fails to overcome the second (Day et al. 1998). In this abstract, a calibration method is developed and tested on a Polhemus Fastrak ® with a long range transmitter.


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