三轴磁强计测量误差修正方法

基金项目:

国家自然科学基金（项目编号：50975280）；教育部新世纪优秀人才支持计划（项目编号：NCET-08-0149）

The error correction of three-axis magnetometer measurement

College of Aerospace and Materials Engineering, National University of Defense Technology

摘要: 三轴磁强计测量误差修正对卫星姿态确定和控制具有重要意义。文章针对三轴磁强计测量误差的来源进行理论分析，引入磁场输入引起的常值漂移，建立了三轴磁强计测量误差修正模型，并基于该模型在磁环境模拟器中对Honeywell公司的三轴磁强计（HMR2300R）进行标定。实验结果表明改进模型可以将测量误差控制在50 nT以内，满足低成本敏感器在微小卫星姿态确定中的应用要求。
- 三轴磁强计；修正模型；常值漂移；磁环境模拟器
Abstract: The error correction of three-axis magnetometer measurement is of great importance to satellite attitude determination and control. In this paper, the error sources of three-axis magnetometer measurement are theoretically analyzed. Considering the case of constant shift caused by the magnetic input, an error correction model is proposed, with which the three-axis magnetometer HMR2300R made by Honeywell is calibrated and tested in a magnetic simulator. The experimental results show that the error of the three-axis magnetometer measurement can be controlled within 50 nT with the proposed method, which can meet the application requirements for low cost sensors in attitude determination and control of micro-satellites.
- three-axis magnetometer