An analytic algorithm based electromagnetic localization method

An electromagnetic based tracking method is proposed in this paper, which can provide 6D position and orientation information. This method is based on triaxial transmitting coils and triaxial sensing coils, which are based on the electromagnetic field. Transmitting coils fed with different frequency alternating current (AC) signals comprise the magnetic field source, which can be seen as three orthogonal magnetic dipoles. By extracting the amplitude and phase information from the triaxial sensing coils, 3D position and 3D orientation information of the sensing coils in the pre-defined localization coordinate system can be estimated using an appropriate algorithm. In this paper, an analytic method is proposed to realize the calculation, which can estimate the position and orientation of the sensing coils easily and fast. Simulation results indicate that this method has a good performance.