| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method and system for tracking a position of an object. <P>SOLUTION: The method for tracking a position of an object includes a process using a magnetic field sensor associated with the object to measure field strengths of magnetic fields generated by two or more field generators, wherein a measurement of at least one of the field strengths is subject to a distortion. Rotation-invariant location coordinates of the object are calculated responsively to the measured field strengths. Corrected location coordinates of the object are determined by applying a coordinate correcting function to the rotation-invariant location coordinates so as to adjust a relative contribution of each of the measured field strengths to the corrected location coordinates responsively to the distortion in the measured field strengths. <P>COPYRIGHT: (C)2008,JPO&INPIT |
