Abstract:

In the electromagnetic tracker system, as a result of the incompletely orthogonal three-axis magnetic sensor, the parameters precision is degraded. The precious method based on conjugated approximation gradient algorithm and artificial neural network model has the disadvantages of complexity, time-consuming and bad precision. A fast correction arithmetic is presented based on the correction matrix. Linear equations are constructed based on the special parameters tracker models, from which the correction matrix is deduced. Numerical-simulation results indicate that the incompletely orthogonal parameters could be calculated efficiently and correctly. The parameters precision of the tracker system is improved.