中文摘要：

为了研究电磁跟踪系统磁性环天线型传感器性能,采用基于消息传递模式的网络并行计算系统和区域分割技术实现了并行时域有限差分（FDTD）算法。为了克服系统激励源频率较低难以模拟的困难,引入快速傅立叶变换（FFT）算法,分析了所需频段的传感器磁场特性。通过数值模拟结果验证了所提算法的正确性,分析了磁传感器线圈尺寸与磁芯材料导磁率对传感器性能的影响,分析了系统工作环境中存在金属物体时的磁场畸变规律,为系统的改进与误差机理的研究提供了理论基础。

英文摘要：

To study the performance of electromagnetic position system magnetic winding sensor,the parallel-FDTD algorithm is presented on a distributed network.The message passing module and space decomposition technique are introduced.In FDTD application,simulation of low frequency exciting source is very difficult.The FFT algorithm is introduced to analyze the magnetic field characteristic in some special frequency.The numerical results validate the correct of this algorithm.The effects of magnetic core permeability and winding size on sensor performance are analyzed.The distortion rules of the magnetic fields cased by metal which are omnipresent at real sites are also analyzed.This work provides the theoretical support for the system improvement and error calibration.