水下无人系统学报2025，Vol.33Issue(5)：846-855,10.DOI:10.11993/j.issn.2096-3920.2025-0047
海上目标磁场多模特征提取方法
Extraction Method for Multiple Feature Models of the Magnetic Field from Marine Targets
摘要
Abstract
Maritime targets cause distortions in the surrounding magnetic field,forming the target's magnetic field signature.This signature is widely used in target detection and ship stealth.To address the issue of multi-modal feature extraction for the target's magnetic fields,a magnetic anomaly signal model under an encounter scenario was established based on the magnetic signal generation mechanism.This model analyzed the characteristic differences between different source magnetic fields of the same target.A magnetic feature-based variational mode decomposition(VMD)method was proposed,which optimized the parameters for decomposing the target's magnetic signal.Based on frequency characteristic differences,it effectively separated the static magnetic field and the shaft-rate magnetic field signal.Actual marine interference signals were collected and combined with simulated target signals to validate the decomposition method.The results show that 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 is measured in practice.By using the measured data,the effectiveness of the proposed decomposition method for extracting marine targets'multi-modal features otarget features is validated.关键词
舰船磁场/变分模态分解/多模特征提取/轴频磁场Key words
ship's magnetic field/variational mode decomposition/multi-modal feature extraction/shaft-rate magnetic field分类
武器工业引用本文复制引用
董昊,张宇,覃维,陈帅..海上目标磁场多模特征提取方法[J].水下无人系统学报,2025,33(5):846-855,10.基金项目
国家重点研发计划项目资助(2022YFC3104002). （2022YFC3104002）
