孟立飞^1,,
潘宗浩^2,,,
易忠¹,
王国强³,
张铁龙^3,4
1. 北京卫星环境工程研究所, 北京 100029
2. 中国科学技术大学地球和空间科学学院中国科学院近地空间环境重点实验室, 合肥 230026
3. 哈尔滨工业大学(深圳)空间科学与应用技术研究院, 深圳 518055
4. 奥地利科学院空间研究所, 格拉茨 A-8042

基金项目: 国家自然科学青年基金（41404134）资助


详细信息

作者简介: 孟立飞, 女, 1979年生, 2005年北京大学物理学院硕士毕业, 主要从事航天器磁性设计、磁性控制、磁性测试等相关工作.E-mail:mlifei@yahoo.com

通讯作者: 潘宗浩, 男, 1980年生, 2012年中国科学技术大学地球和空间科学学院博士毕业, 主要从事航天器空间磁场探测及空间天气环境预报模式研究等相关工作.E-mail:zhpan@ustc.edu.cn

中图分类号: P353

收稿日期:2017-07-01
修回日期:2017-07-21
上线日期:2018-09-05

Error properties of the fluxgate magnetometer offset based on Davis-Smith method

MENG LiFei^1,,
PAN ZongHao^2,,,
YI Zhong¹,
WANG GuoQiang³,
ZHANG TieLong^3,4
1. Beijing Institute of Spacecraft Environment Engineering, Beijing 100029, China
2. Key Laboratory of Geospace Environment, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China
3. Institute of Space Science and Applied Technology, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
4. Space Research Institute, Austrian Academy of Sciences, A-8042 Graz, Austria


More Information

Corresponding author: PAN ZongHao,E-mail:zhpan@ustc.edu.cn

MSC: P353

--> Received Date: 01 July 2017
Revised Date: 21 July 2017
Available Online: 05 September 2018


摘要
摘要:卫星所携带的磁通门磁强计会随时间发生零位漂移，因此需要对其进行补偿.基于行星际磁场的剪切阿尔芬波动特性，利用Davis-Smith方法可计算磁强计的零位磁场.本文利用数值模拟，分析了总磁场幅度B_T及压缩波动对Davis-Smith方法所产生零位补偿的误差特征.我们发现，B_T越大，零位补偿误差越大；且当压缩波动频率和剪切波动频率不同时，磁场各分量的零位补偿之间的比值与对应背景磁场的比值近似相等；压缩波动的幅度越小，零位补偿的误差趋于更小；此外，压缩波动的频率和初始相位等也会影响零位补偿的误差.这些误差特征可为提高零位补偿的可靠性提供重要的理论依据.
关键词: 磁强计校准/
Davis-Smith方法/
补偿/
误差特征

Abstract:There is a zero level drift for the fluxgate magnetometer carried by a satellite over time, so the magnetometer needs to be compensated. Based on the characteristics of the Alfvén fluctuation of the interplanetary magnetic field, the Davis-Smith method can be used to calculate the zero level of the magnetometer. In this paper, we use the numerical simulation to analyze the error characteristics of the zero level, which calculated by the Davis-Smith method, caused by the total magnetic field amplitude B_T and the compressional fluctuation. We find that the larger the B_T is, the greater the error of the zero level is. When there is a difference of the frequencies between the compressional and Alfvén fluctuations, the ratio between the zero level offsets of any two components of the magnetic field is approximately equal to the ratio of the corresponding background magnetic field. The error of the zero level tends to be smaller when the amplitude of the compressional fluctuation is smaller. In addition, the frequency and initial phase of the compressional fluctuation can also affect the error of the zero level. These error characteristics can provide important theoretical basis for improving the reliability of the zero level offset.
Key words:Magnetometer calibration/
Davis-Smith method/
Offset/
Error characteristics



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