基于多特征参数约束的二维地磁匹配定位方法
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1.深部探测与成像全国重点实验室(吉林大学);2.吉林大学仪器科学与电气工程学院;3.吉林大学

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TP391

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吉林省自然科学基金面上项目(20250102173JC)


A Two-dimensional Geomagnetic Matching Localization Method Based on Multi-Feature Parameter Constraints
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1.State Key Laboratory of Deep Earth Exploration and Imaging(Jilin University);2.College of Instrumentation &3.Electrical Engineering, Jilin University;4.Jilin University

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    摘要:

    地磁匹配定位技术是导航定位领域的一个重要研究方向,在室内及其他卫星拒止环境中具有广泛的应用前景。然而,在从一维扩展至二维应用场景时,地磁匹配面临搜索范围急剧增大、计算负担加重的问题。同时,二维地磁图中存在的相似特征易导致误匹配,进而影响定位精度。针对上述问题,本文提出一种基于多特征参数约束的二维地磁匹配定位方法。该方法采用地磁序列匹配策略,通过缩减候选指纹序列数量以提升匹配效率,并结合载体运动特征约束、地磁场周期性变化特征以及动态时间规整算法(Dynamic Time Warping, DTW),构建以路径匹配为模式的定位机制。为验证算法性能,搭建了搭载磁传感器的无磁小车实验平台。实验结果表明,本文方法单点定位时间缩短到1.75ms,在典型环境中的平均定位精度达到1.37米。

    Abstract:

    Geomagnetic matching localization is an important research direction in navigation and positioning, with broad application prospects in indoor and other satellite-denied environments. However, extending from one-dimensional (1D) to two-dimensional (2D) scenarios incurs a sharp increase in the search space and computational burden. Moreover, the presence of similar features in 2D geomagnetic maps can lead to mismatches, thereby degrading positioning accuracy. To address these issues, this paper proposes a multi-feature-parameter-constrained 2D geomagnetic matching localization method. The approach adopts a geomagnetic sequence matching strategy that reduces the number of candidate fingerprint sequences to improve matching efficiency, and integrates vehicle motion constraints, periodic variation characteristics of the geomagnetic field, and the Dynamic Time Warping (DTW) algorithm to construct a path-matching–based localization mechanism. An magnetically non-magnetic test vehicle equipped with magnetometers is developed for experimental validation. Results show that the proposed method reduces the single-point localization time to 1.75 ms, and achieves an average positioning accuracy of 1.37 m in typical environments.

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王言章,邹连旭,万云霞. 基于多特征参数约束的二维地磁匹配定位方法[J]. 科学技术与工程, , ():

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  • 收稿日期:2026-02-06
  • 最后修改日期:2026-04-07
  • 录用日期:2026-05-10
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