摘 要： 轨道车辆地磁定位对于保障车辆安全运行具有重要意义，轨道车辆往往含有大量的铁磁性结构，高速行驶的车辆在遇到对向和同向错车情况，与相邻车辆互相影响，产生强烈的感应磁场干扰。设计了一种基于小波变换的地磁错车干扰抑制方法，采用对称性良好的“sym8”小波基波以及八级小波分解模型，试验结果表明，提出的方法可以显著抑制高频高幅值的错车干扰信号。

关键词： 轨道车辆 地磁 干扰抑制 交通工具

中图分类号： TP393文献标识码： A文章编号： 1679-3567（2024）02-0008-03

Research on Ground Magnetic Matching Interference Suppression Method for Rail Vehicles

WANG Yandong1 LIU Jiwei1 FANG Jiyin1 ZHANG Xueyan1 LAI Qifeng2*

（ 1.Jiayuguan Mechanical Department， China Railway Lanzhou Bureau Group Co.， Ltd.， Lanzhou， Gansu Province， 735100 China； 2.Institute of Space and Astronautical Information Innovation， Chinese Academy of Sciences， Beijing， 100864 China ）

Abstract： The geomagnetic positioning of rail vehicles is of great significance to ensure the safe operation of vehicles. Rail vehicles often contain a large number of ferromagnetic structures， with high-speed vehicles encountering opposite and same direction staggering situations. The neighboring vehicles affect each other and produce strong induced magnetic field interference. In this paper， a wavelet transform-based geomagnetic misalignment interference suppression method is designed， using a good symmetry of the "sym8" wavelet fundamental and eight-level wavelet decomposition model. The test results show that the method proposed in this paper can significantly improve the high-frequency and high-amplitude misalignment interference signals.

Key Words： Rail vehicle； Geomagnetic； Interference suppression； Transportation

軌道车辆是人类出行、货物运输的重要交通工具，提供实时、可靠的定位信息是保障轨道车辆安全运行的一项重要措施。