We have developed a magnetic motion capture system consisting of up to two
magnetic markers (Nd-Fe-B magnet) and four three-axial sensors. The positio
n and orientation of the magnetic makers (dipole) are detected by measuring
the magnetic field of markers, Position accuracy of one marker is about 3
mm when a marker is located 150 mm from a sensor, position accuracy of two
markers is about 20 mm when the markers are located 150 mm from sensors, Th
e most common error source is cross talk between the cores of three-axial s
ensors.