Super Resolution Multi-target Localization Method for Overlapped Magnetic Anomaly Field

IF 1.9 3区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC
Wupeng Xie;Yaxin Mu;Luzhao Chen;Xin Liu;Zhongde Yu
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引用次数: 0

Abstract

Significant progress has been made in the isolated ferrous target localization based on magnetic anomaly field. However, localizing multiple nearby targets remains an ongoing challenge, especially in cases of overlapped magnetic anomaly fields. Here, we propose a super resolution multi-target localization method based on the normalized source strength (NSS) data. Multiple uniformly distributed magnetic dipoles are preset in the solution space, so the measured NSS is the is the sum of the NSS generated by all magnetic dipoles, and an underdetermined linear system is established for the unknown vector of magnitude of magnetic moment of all diploes. Since the targets are sparse in the solution domain, $L1$ -minimization technique is used to estimate the nonzero dipoles, thereby determining the number and position of the targets. Experiments and results have been demonstrated, indicating the target resolution is the interval of the magnetic dipoles in subsurface space, which is smaller than the spatial resolution of the magnetic anomaly field, and when the magnetic anomaly field is aliased, the proposed approach is able to estimate the number, position, and magnetic moment of the targets.
重叠磁异常超分辨率多目标定位方法
基于磁异常的孤立铁靶定位研究取得了重大进展。然而,定位多个附近目标仍然是一个挑战,特别是在重叠磁异常场的情况下。本文提出了一种基于归一化源强度(NSS)数据的超分辨率多目标定位方法。在解空间中预设多个均匀分布的磁偶极子,则测量到的NSS为所有磁偶极子产生的NSS之和,对于所有磁偶极子磁矩大小的未知矢量,建立一个待定线性系统。由于目标在解域中是稀疏的,采用$L1$最小化技术估计非零偶极子,从而确定目标的数量和位置。实验和结果表明,目标分辨率为磁偶极子在地下空间的间距,小于磁异常场的空间分辨率,当磁异常场混叠时,该方法能够估计目标的数量、位置和磁矩。
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来源期刊
IEEE Transactions on Magnetics
IEEE Transactions on Magnetics 工程技术-工程:电子与电气
CiteScore
4.00
自引率
14.30%
发文量
565
审稿时长
4.1 months
期刊介绍: Science and technology related to the basic physics and engineering of magnetism, magnetic materials, applied magnetics, magnetic devices, and magnetic data storage. The IEEE Transactions on Magnetics publishes scholarly articles of archival value as well as tutorial expositions and critical reviews of classical subjects and topics of current interest.
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