Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2011, Vol. 34 ›› Issue (1): 64-68.doi: 10.13190/jbupt.201101.64.377

• Papers • Previous Articles     Next Articles

Position Model of SixDOF Electromagnetic Tracker and  NearField Calibration Technique

  

  • Received:2010-03-15 Revised:2010-09-19 Online:2011-02-28 Published:2011-02-28

Abstract:

To study the accuracy of magneticdipole position model, the parallelfinite difference time domain (parallelFDTD) arithmetic is presented on a distributed network. The message passing module and space decomposition technique are applied. In FDTD application, simulation of low frequency exciting source is very difficult. The fast Fourier transform arithmetic is introduced to analyze the magnetic characteristic of some special frequency by using Gaussian pulse exciting source. The nearfield position model and the calibration arithmetic are set up based on the Lagendre polynomial. The effects of position distance on magneticdipole position model and parameters position error rule are analyzed. Numerical results validates that the parameters accuracy could be improved by the Lagendre polynomial nearfield calibration model.

Key words: parallelfinite difference time domain, fast Fourier transform, Lagendre polynomial, nearfield calibration, electromagnetic tracker

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