Research on Locating Model of Electromagnetic Tracking System

摘要

A locating model of anisotropic parameters was introduced to solve the problem of precision degrading caused by the different gains of three axes in six-degree-of-freedom electromagnetic tracking system, which was based on magnetic dipole model. By analyzing the effects of distance on magnetic dipole locating model and parameters error rules, the near-field locating model and calibration arithmetic was advanced based on the Lagendre polynomial. The numerical simulation results proved that the anisotropic parameters model and near-field calibration model were valid. And the precision of this system was improved.