Magnetic Tracker Calibration Using Polynomial Fitting

Magnetic tracker is used to track the position of an object. However, Magnetic trackers are susceptible to distortions caused by ferromagnetic objects around magnetic trackers or objects that produce a magnetic field. To eliminate distortion, it is not possible. Therefore it is necessary to calibrate the magnetic tracker adjusted to the condition of the room. Consequently we created a measurable calibration space used to map the position of the magnetic tracker. Magnetic tracker mapping using polynomial fitting method. Total data mapped as many as 4195 data. By polynomial fitting method, the lowest error is in 5th order polynomial fitting with error on axis x = 0,0189cm, y = 0.03 axis, and z = 0.0309cm axis. The total error calculated at 5th order is 0.047 cm with the total deviation standard reaching 0.02774 cm