Remanent Magnetic Field Modeling of Naval Vessels Based on Integral Method and Tikhonov RegularizationMethod

doi:10.3969/j.issn.1000-1093.2012.04.013

Abstract

Abstract: Due to the complexity and unpredictability of the magnetization history of ship ferromagnetic material, the remanent magnetic field modeling of ships is always a technical issue in ship magnetic silencing. A new reconstruction method of the remanent magnetic field of ship was proposed based on an integral method and Tikhonov regularization method. Firstly, the magnetic field below a ship was measured, and the induced magnetic field caused by geomagnetic field at the measuring points was calculated. Then, a remanent magnetic field inverse model was given based on the measured data of magnetic field and the calculated induced magnetic field. Tikhonov regularization method was adopted to solve the above inverse model to eliminate the ill-conditioning influence of the inverse model. A mockup was designed to verify the proposed method. The results show that the calculation accuracy is satisfying and the remanent magnetic field can be reconstructed efficiently by the proposed method.

Key words: electromagnetics, integral method, remanent magnetic field, Tikhonov regularization method

CLC Number:

TM153

ZHOU Guo-hua, XIAO Chang-han, LIU Da-ming, LIU Sheng-dao. Remanent Magnetic Field Modeling of Naval Vessels Based on Integral Method and Tikhonov RegularizationMethod[J]. Acta Armamentarii, 2012, 33(4): 459-465.

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