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A method for magnetic field prediction caused by naval vessels using magnetic charge distribution

Chen Jie Lu Xi-Wen

A method for magnetic field prediction caused by naval vessels using magnetic charge distribution

Chen Jie, Lu Xi-Wen
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Publishing process
  • Received Date:  10 September 2008
  • Accepted Date:  05 November 2008
  • Published Online:  05 March 2009

A method for magnetic field prediction caused by naval vessels using magnetic charge distribution

  • 1. 华东理工大学理学院,上海 200237

Abstract: From the viewpoint of equivalent sources, the ferromagnetic hull of naval vessels is regarded as a magnetic charge layer, and a Fredholm integral equation of the first kind relating the layer with the measurements of magnetic field sensors is developed. After the discretization of the integral equation, a system of linear equations is obtained which is solved by generalized inverse matrix, and the condition number is employed to assess whether the system is ill-posed. Then the field caused by the hull at an arbitrary point in the space is predicted by the calculated layer. A numerical simulation shows that our method can precisely identify the magnetization to predict the field. And finally a ship model is used to verify the method.

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