Ship Magnetic Field Inversion Modeling Method Utilizing the Magnetic Field Difference between Magnetic Sensors

GUO Chengbao;HU Song;WANG Wenjing;YIN Qiqi

Acta Armamentarii ›› 2022, Vol. 43 ›› Issue (1) : 111-119. DOI: 10.3969/j.issn.1000-1093.2022.01.012
Paper

Ship Magnetic Field Inversion Modeling Method Utilizing the Magnetic Field Difference between Magnetic Sensors

  • GUO Chengbao, HU Song, WANG Wenjing, YIN Qiqi
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Abstract

A method of ship magnetic field inversion modeling utilizing the magnetic field difference of magnetic sensor array is proposed to suppress the influence of environmental noise in magnetic fields, such as geomagnetic field variation and magnetic interference of artificial facility,etc. The formulas for calculating the magnetic field difference between the magnetic sensors in the magnetic sensor array are given for each measurement time. The linear equations for inversing the magnetic source from a ship are constructed by using the three-dimensional ship magnetic monopole array model. Finally,the inversed values of the magnetic source model of ship is obtained by using the regularization technique. The magnetic fields of a typical virtual ship are used to verify the validity of the proposed method. The results show that the proposed method can remove the interference effects of coherent magnetic field noise, and achieve high-precision inversion modeling of the magnetic field of a ship in the magnetically noisy environment. The validity of the proposed method is verified. If the proposed method is used for high precision inversion modeling of ship's magnetic field measurement data in magnetically noisy environment, the geomagnetic reference sensors are not required, and the corresponding facilities are low cost and easy to locate.

Key words

shipmagneticfield / magneticsensorarray / equivalentsourcemethod / magneticfielddifferencevalue

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GUO Chengbao, HU Song, WANG Wenjing, YIN Qiqi. Ship Magnetic Field Inversion Modeling Method Utilizing the Magnetic Field Difference between Magnetic Sensors. Acta Armamentarii. 2022, 43(1): 111-119 https://doi.org/10.3969/j.issn.1000-1093.2022.01.012

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第43卷第1期2022年1月
兵工学报ACTA ARMAMENTARII
Vol.43No.1Jan.2022

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