航天器工程2018，Vol.27Issue(1)：89-95,7.DOI:10.3969/j.issn.1673-8748.2018.01.012
微小卫星三轴磁强计测量误差校正方法
Error Calibration Method of Three-axis Magnetometer Measurement for Micro-satellite
摘要
Abstract
Measurement of the magnetic field intensity is required for micro-satellite to damp and attitude control.The measurement errors because of change of the temperature would reduce the measurement precision of the three-axis magnetometer,so the measurement errors need to be calibrated.In this paper,an error calibration method of three-axis magnetometer measurement is proposed,and the error calibration model is established based on measurement error analysis. According to the magnetic field intensity and temperature of the magnetic simulator and the out-put voltage of the three-axis magnetometer,the temperature model of three-axis magnetometer is set up.The calibration coefficient is achieved by pseudo-inverse method,and the relationship be-tween calibration coefficient and temperature,the relationship between zero-point voltage are fit-ted with linear method,then the measurement precision of the three-axis magnetometer could be compensated by temperature.The three-axis magnetometer is calibrated and tested in a magnetic simulator in which the temperature can change.The results verify the correctness and effective-ness of the calibration method proposed in the paper.关键词
微小卫星/三轴磁强计/温度模型/标定系数/线性拟合Key words
micro-satellite/three-axis magnetometer/temperature model/calibration coefficient/linear fitting分类
航空航天引用本文复制引用
刘燎,孙华苗,何波,薛力军,张迎春..微小卫星三轴磁强计测量误差校正方法[J].航天器工程,2018,27(1):89-95,7.基金项目
国家自然科学基金(61473297),深圳市技术攻关项目(JSGG20160429165838848) （61473297）
