潘宗浩^1,4,,
王国强^2,,,
孟立飞³,
易忠³,
张铁龙^2,4,5
1. 中国科学技术大学地球和空间科学学院, 合肥 230026
2. 哈尔滨工业大学(深圳), 广东深圳 518055
3. 北京卫星环境工程研究所, 北京 100029
4. 中国科学院比较行星学卓越创新中心, 合肥 230026
5. 奥地利科学院空间研究所, 格拉茨 A-8042

基金项目: 国家自然科学基金（41774171，41804157），深圳启动基金，深圳知识创新计划基础研究（JCYJ20170811154933612），高等学校学科创新引智计划（B18017）联合资助


详细信息

作者简介: 潘宗浩, 男, 2012年中国科学技术大学地空学院博士毕业, 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

通讯作者: 王国强, 助理教授, 主要研究方向为磁层物理.E-mail:wanggq@hit.edu.cn

中图分类号: P353

收稿日期:2018-10-14
修回日期:2018-11-08
上线日期:2019-04-05

Influence of Alfvénic characteristics on calibration of satellite magnetometer

PAN ZongHao^1,4,,
WANG GuoQiang^2,,,
MENG LiFei³,
YI Zhong³,
ZHANG TieLong^2,4,5
1. School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China
2. Harbin Institute of Technology(Shenzhen), Shenzhen Guangdong 518055, China
3. Beijing Institute of Spacecraft Environment Engineering, Beijing 100029, China
4. Center for Excellence in Comparative Planetology, Chinese Academy of Sciences, Hefei 230026, China
5. Space Research Institute, Austrian Academy of Sciences, A-8042 Graz, Austria


More Information

Corresponding author: WANG GuoQiang,E-mail:wanggq@hit.edu.cn

MSC: P353

--> Received Date: 14 October 2018
Revised Date: 08 November 2018
Available Online: 05 April 2019


摘要
摘要:磁通门磁力仪的零位偏移量在卫星轨道上会因诸多因素而发生改变.为此，基于剪切阿尔芬波动不改变总磁场强度这一特征的Davis-Smith方法被提出用于计算磁力仪的零位补偿.实际上，行星际空间中没有纯粹的阿尔芬波动.本文采用数值模拟分析了存在小的压缩波动情况下，阿尔芬波动的幅度、周期和相位以及数据窗口时间长度等对Davis-Smith方法计算零位补偿的影响.我们发现，只有当阿尔芬波动的周期与压缩波动周期相同时，阿尔芬波动的性质会对零位补偿的计算产生不可忽视的误差.阿尔芬波动的幅度越大，零位补偿的误差越小.磁场各分量零位补偿的误差大小还会受到阿尔芬波动初始相位的影响.此外，数据窗口时间长度越长，则零位补偿误差趋于减小至真实值.
关键词: 磁力仪校准/
Davis-Smith方法/
阿尔芬波动/
补偿/
误差特征

Abstract:The zero offset of the fluxgate magnetometer in satellite orbit will be changed due to several factors. For this reason, the Davis-Smith method is proposed to calculate the zero compensation of the magnetometer based on the feature that the shear Alfvén waves do not change the total magnetic field strength. In fact, there is no pure Alfvén waves in the interplanetary space. In this paper, numerical simulation is used to analyze the influence of the amplitude, period and phase of the Alfvén waves and the time length of the data window on the zero offset of the magnetometer calculated by the Davis-Smith method in the presence of weak compressional waves. We find that Alfvén waves can produce a non-negligible error in the calculation of zero compensation only when its period is the same as the period of the compressional wave. The greater the amplitude of Alfvén waves, the smaller the error of the zero offset. The error of the zero offset is also affected by the initial phase of the Alfvén wave. In addition, the error of the zero offset tends to decrease to its true value for the longer the data window length.
Key words:Magnetometer calibration/
Davis-Smith method/
Alfvén wave/
Offset/
Error characteristics



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