传感技术学报2024，Vol.37Issue(6)：1041-1048,8.DOI:10.3969/j.issn.1004-1699.2024.06.014
地磁匹配定位中高精度地磁测量组合降噪算法
Combined Noise Reduction Algorithm for High Precision Geomagnetic Measurement in Geomagnetic Matching Location
摘要
Abstract
In geomagnetic matching and positioning,geomagnetic measurement signals contain a variety of magnetic disturbance noise such as magnetic field of soft and hard magnetic materials of navigation carrier,magnetic field of electrical equipment,magnetic field of power transmission equipment,etc.The characteristics of magnetic field generated by soft and hard magnetic materials,electrical equipment and power transmission equipment are theoretically analyzed,and the magnetic field compensation model of soft and hard magnetic materials with fixed parameters is deduced.The principle and feasibility of wavelet denoising are analyzed,and the magnetic disturbance error is eliminated by using the fixed parameter and wavelet filter combined denoising algorithm.The experiment and error analysis show that the algorithm has a good noise reduction effect,and effectively solves the key problem of magnetic disturbance noise in geomagnetic measure-ment.The mean square error is less than 10 nT,and the purpose of improving the geomagnetic measurement accuracy is achieved.关键词
地磁测量/小波降噪/参数补偿/组合降噪Key words
geomagnetic measurement/wavelet noise reduction/parameter compensation/combined noise reduction分类
交通工程引用本文复制引用
张玉芝,杨腾越,杨云涛,孙荟,刘刊..地磁匹配定位中高精度地磁测量组合降噪算法[J].传感技术学报,2024,37(6):1041-1048,8.基金项目
国防重点预研项目(51309060301) （51309060301）
"石家庄市智能网联汽车导航定位技术创新中心"项目 （）
