A New Onboard Calibration Strategy For Three-Axis Magnetometers In Low Earth Orbit Satellites

被引:0
作者
Liu, Na [1 ]
Zhao, Jin [2 ]
Guo, Yuxiu [1 ]
机构
[1] Cangzhou Normal Univ, Coll Phys & Informat Engn, Cangzhou 061001, Hebei, Peoples R China
[2] Dalian Polytech Univ, Coll Art & Informat Engn, Dalian 116400, Peoples R China
来源
JOURNAL OF APPLIED SCIENCE AND ENGINEERING | 2025年 / 28卷 / 04期
关键词
Three-axis magnetometer; onboard calibration; Kalman filter; low Earth orbit satellites; BIAS DETERMINATION; ATTITUDE; DESIGN;
D O I
10.6180/jase.202504_28(4).0015
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
In this paper, a detailed model of the onboard magnetometer and a novel onboard calibration strategy are proposed for three-axis magnetometers installed on low Earth orbit satellites. The extracted model includes all error factors and well describes the behavior of a real magnetometer. Also, a new procedure is suggested to generate magnetometer data so that the data close to reality can be used to estimate its parameters. Moreover, a two-stage algorithm based on the Kalman filter is developed that, in addition to bias, scale factor, and nonorthogonality, also estimates misalignment error. More specifically, the sensor parametersbias, scale factor, and non-orthogonality-are calculated when the magnetometer data are introduced as measurement data into the algorithm's first step. Next, a misalignment error is computed by feeding the estimated parameters into the algorithm's second step. The suggested model and tactic are then simulated. The suggested approach has minimal convergence time and great accuracy, according to the simulation results.
引用
收藏
页码:841 / 851
页数:11
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