Calibration Method of Three-Axis Magnetometer Based on Sine Fitting

被引：0
|
作者：
Jia W. [1 ]
Lin C. [1 ]
Lin P. [1 ]
Zhai G. [2 ,3 ]
机构：
[1] College of Weapon Engineering, Naval University of Engineering, Wuhan
[2] Department of Navigation Engineering, Naval University of Engineering, Wuhan
[3] Naval Institute of Hydrographic Surveying and Charting, Tianjin
来源：
Wuhan Daxue Xuebao (Xinxi Kexue Ban)/Geomatics and Information Science of Wuhan University | 2019年 / 44卷 / 09期
基金：
中国国家自然科学基金;
关键词：
Calibration; Magnetic field measurement; Sine fitting; Three-axis magnetometer;
D O I：
10.13203/j.whugis20170379
中图分类号：
学科分类号：
摘要：
Three-axis magnetometer is a measuring tool commonly used for magnetic field measurement, which is widely used in geomagnetic navigation, ocean magnetic survey, geomagnetic exploration and other fields. As a magnetic field vector measuring tool, the magnetic measurement error of the three-axis magnetometer mainly comes from three-axis non-orthogonal, sensitivity inconsistency of sensitive axis and zero offset error. The calibration of the magnetometer affects the measurement performance of the magnetometer. In order to solve the calibration problem of three-axis magnetometer, the error compensation model for the magnetometer is established. The calibration method of the three-axis magnetometer based on sine fitting is proposed. The output data of the three-axis magnetometer is fitted into the sine curve when the magnetometer is rotated on a plane. The calibration parameters of the three-axis magnetometer are calculated by using the information of amplitude, initial angle and translational value of sine curve. The simulation results show that the proposed method can solve the calibration problem without the process of nonlinear optimization, and the calculated calibration parameters are in good agreement with the set values. The measurement noise has little effect on the three-axis sensitivity coefficient and the non-orthogonal angle. magnetometer mainly comes from three-axis non-orthogonal, sensitivity inconsistency of sensitive axis and zero offset error. The calibration of the magnetometer affects the measurement performance of the magnetometer. In order to solve the calibration problem of three-axis magnetometer, the error compensation model for the magnetometer is established. The calibration method of the three - axis magnetometer based on sine fitting is proposed. The output data of the three-axis magnetometer is fitted into the sine curve when the magnetometer is rotated on a plane. The calibration parameters of the three-axis magnetometer are calculated by using the information of amplitude, initial angle and translational value of sine curve. The simulation results show that the proposed method can solve the calibration problem without the process of nonlinear optimization, and the calculated calibration parameters are in good agreement with the set values. The measurement noise has little effect on the three-axis sensitivity coefficient and the non-orthogonal angle. © 2019, Research and Development Office of Wuhan University. All right reserved.
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页码：1328 / 1333and1406
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