中国空间科学技术

中国空间科学技术 ›› 2024, Vol. 44 ›› Issue (3): 174-179.doi: 10.16708/j.cnki.1000-758X.2024.0051

• 论文 • 上一篇    

一种高精度星载磁强计系统级标定方法

孟立飞，徐超群，肖琦，刘超波，耿晓磊，陈德祥，易忠，张铁龙   

  1. 1.哈尔滨工业大学（深圳），深圳 518055
    2.北京卫星环境工程研究所，北京 100094
    3.北京控制工程研究所，北京 100190
    4.奥地利科学院 空间研究所，格拉茨 A-8042
  • 出版日期:2024-06-25 发布日期:2024-06-05

A high-precision system level calibration method for spaceborne magnetometers

MENG Lifei，XU Chaoqun，XIAO Qi，LIU Chaobo，GENG Xiaolei，CHEN Dexiang，YI Zhong，ZHANG Tielong   

  1. 1.Harbin Institute of Technology（Shenzhen），Shenzhen 518055，China
    2.Beijing Institute of Spacecraft Environment Engineering，Beijing 100094，China
    3.Beijing Institute of Control Engineering，Beijing 100190，China
    4.Space Research Institute，Austrian Academy of Sciences，Graz A-8042，Austria
  • Published:2024-06-25 Online:2024-06-05

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摘要： 星载三轴磁强计经常被用于卫星在轨的姿态确认与修正，为提高其在轨磁场测量精度，提出了一种高精度的星载磁强计系统级标定方法。首先，引入了光学棱镜基准，完成了参照磁强计磁轴的正交性自校准。随后，利用二乘法完成了三轴零磁环境模拟系统线圈系数校准，再利用参照磁强计完成了三轴零磁环境模拟系统磁轴正交性标定，从而获得高精度的空间磁环境地面模拟系统。最后，利用三轴零磁环境模拟系统与卫星正交性对应关系，完成了星载磁强计的标定。试验结果表明：经过标定后，三轴零磁环境模拟系统非正交度优于0.01°，星载磁强计标定误差优于10nT，为星载磁强计系统地面标定试验验证提供了新途径。

关键词: 卫星控制, 姿态确定, 磁强计, 自校准装置, 棱镜

Abstract:  Spaceborne three-axis magnetometers are often used for attitude confirmation and correction of satellites in orbit.In order to improve the accuracy of in-orbit magnetic field measurement，a high-precision system level calibration method for spaceborne magnetometers is proposed.Firstly，an optical prism reference is introduced to achieve the orthogonality self-calibration of the reference magnetometer magnetic axis.Subsequently，the coil coefficient calibration of the three-axis zero magnetic environment simulation system is completed using the multiplication method.The magnetic axis orthogonality calibration of the three-axis zero magnetic environment simulation system is completed using a reference magnetometer，thereby obtaining a high-precision space magnetic environment ground simulation system.Finally，the calibration of the spaceborne magnetometer is completed using the orthogonality correspondence between the three-axis zero magnetic environment simulation system and the satellite.The experimental results show that the non orthogonality of the three-axis zero magnetic environment simulation system is better than 0.01°，and that the calibration error of the spaceborne magnetometer is better than 10nT.The research provides a new approach for ground calibration and verification of spaceborne magnetometer systems.

Key words:  , satellite control；attitude determination；magnetometer；self-calibration device；prism