A novel vector magnetic measurement system calibration method based on geomagnetic variation  

一种基于地磁变化场的新型矢量磁测校准方法

作　　者：Ji-hao Liu Xi-hai Li Chao Niu Xiao-niu Zeng Yun Zhang 刘继昊;李夕海;牛超;曾小牛;张云(火箭军工程大学,陕西西安710025)

机构地区：[1]Rocket Force University of Engineering,Xi’an 710025,China

出　　处：《Applied Geophysics》2025年第1期35-42,232,共9页应用地球物理(英文版)

基　　金：General Project of Basic Research Plan for Natural Sciences in Shaanxi Province,grant number 2023-JC-YB-244;Youth Project of Basic Research Plan for Natural Sciences in Shaanxi Province,grant number 2024JC-YBQN-0253.

摘　　要：Vector magnetic measurement is increasingly widely used.In order to improve the accuracy of vector magnetic measurement system on board a vehicle,researchers have proposed various calibration methods.Most of them require altering the magnetic vector in the vehicle coordinate system.Exploring the use of geomagnetic variation to change the geomagnetic vector in the vehicle coordinate system,this paper proposes a novel vector magnetic measurement calibration method.In this method,a vector magnetometer mounted on a vehicle and an accurate vector magnetometer separately measure the geomagnetic field at diff erent locations within the same area.Based on the physical principle that the geomagnetic variation at two nearby locations is equal,the calibration parameters of the magnetometer on the vehicle can be determined through a set of equations containing the measurements from the two magnetometers.The theoretical derivation and simulation experiment results demonstrate the feasibility of this method.Therefore,it can serve as a new alternative calibration method,especially in scenarios where a high degree of accuracy in the estimation of calibration parameters is not required.矢量磁测量技术的应用日益广泛。为了提高载体矢量磁测量系统的精度,研究人员提出了多种校准方法。其中大多数方法需要在载体坐标系中改变地磁矢量的方向和大小。本文探索了利用地磁变化来改变载体坐标系中的地磁矢量,提出了一种新的矢量磁测量校准方法。该方法将安装在载体上的矢量磁力计和一台高精度矢量磁力计分别放置在相同区域内的不同位置,同时测量地磁场。基于两个临近位置的地磁变化相等的物理规律,可以通过包含两台磁力计测量数据的一组方程确定载体磁力计的校准参数。理论推导和仿真实验结果表明了该方法的可行性。因此,这种方法可以作为一种新的替代校准方案,特别是在对校准参数估计精度要求不高的场景中具有应用潜力。

关 键 词：vector magnetic measurement CALIBRATION geomagnetic variation 

分 类 号：P31[天文地球—固体地球物理学]