Extraction Method for Multiple Feature Models of The Magnetic Field from Marine Targets

DONG Hao; ZHANG Yu; QIN Wei; CHEN Shuai

doi:10.11993/j.issn.2096-3920.2025-0047

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Article Navigation > Journal of Unmanned Undersea Systems > 2025 > Accepted Manuscript

DONG Hao, ZHANG Yu, QIN Wei, CHEN Shuai. Extraction Method for Multiple Feature Models of The Magnetic Field from Marine Targets[J]. Journal of Unmanned Undersea Systems. doi: 10.11993/j.issn.2096-3920.2025-0047

Citation:

DONG Hao, ZHANG Yu, QIN Wei, CHEN Shuai. Extraction Method for Multiple Feature Models of The Magnetic Field from Marine Targets[J]. Journal of Unmanned Undersea Systems. doi: 10.11993/j.issn.2096-3920.2025-0047

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Extraction Method for Multiple Feature Models of The Magnetic Field from Marine Targets

doi: 10.11993/j.issn.2096-3920.2025-0047

DONG Hao^{1, 2
,},
ZHANG Yu^{1, 3
,},
QIN Wei^1
,,
CHEN Shuai^{1, 3
,
,}

1.
The 710 Research Institute, China State Shipbuilding Corporation Limited, Yichang 443003, China
2.
Qingdao Innovation and Development Base, Harbin Engineering University, Qingdao 266300, China
3.
Qingjiang Innovation Center, Wuhan 430076, China

Received Date: 2025-03-20
Accepted Date: 2025-06-16
Rev Recd Date: 2025-06-10

Available Online: 2025-09-26

Abstract

Abstract

Maritime targets cause distortions in the surrounding magnetic field, forming the target's magnetic signature. This signature is widely used in target detection, ship stealth. Addressing the issue of multi-modal feature extraction for target magnetic fields, a magnetic anomaly signal model under an encounter scenario is established based on the magnetic signal generation mechanism. This model analyzes the characteristic differences between different source magnetic fields of the same target. A magnetic feature-based variational mode decomposition (VMD) method is proposed, which optimizes the parameters for decomposing the target's magnetic signal. Based on frequency characteristic differences, it separates the static magnetic field and the shaft-rate magnetic field signal. Actual marine interference signals are collected and combined with simulated target signals to validate the decomposition method. Compared with traditional algorithms, the proposed method achieves signals with a higher signal-to-noise ratio and lower error. Finally, the magnetic field of a ship was measured in practice. Using the measured data, the effectiveness of the proposed decomposition method for extracting maritime target features was validated.
- ship physics property,
- signal decomposition,
- feature extraction,
- shaft-rate magnetic field

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References(24)

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