耿晓磊,
陈金刚,
孟立飞,
李娜,
张艳景
北京卫星环境工程研究所, 北京 100094
详细信息
作者简介: 肖琦, 男, 1977年生, 高级工程师, 主要从事空间磁学及应用技术研究.E-mail:xiaoqi@tsinghua.org.cn
中图分类号: P318 收稿日期:2017-07-04
修回日期:2018-03-22
上线日期:2018-08-05
Calibration methods of the interference magnetic field for Low Earth Orbit (LEO) magnetic satellite
XIAO Qi,GENG XiaoLei,
CHEN JinGang,
MENG LiFei,
LI Na,
ZHANG YanJing
Beijing Institute of Spacecraft Environment Engineering, Beijing 100094, China
MSC: P318
--> Received Date: 04 July 2017
Revised Date: 22 March 2018
Available Online: 05 August 2018
摘要
摘要:为了提高空间磁场探测精度，磁测卫星一般将磁强计安装在长伸杆的顶端，同时通过整星磁洁净控制，来减小磁强计安装位置的磁场干扰量.针对低轨磁测卫星的特点，提出零磁场环境下卫星极弱干扰磁场的高精度测量方法，模拟在轨地磁场环境下卫星感应磁场的标定方法，以及磁力矩器剩磁不确定量的处理方法.通过以上方法对卫星本体产生的干扰磁场实施严格的标定和数据修正，可有效减小其影响，极大提升空间磁场探测精度.该方法已应用于电磁监测卫星，将整星的磁场干扰不确定量降低一个量级，达到优于0.3 nT的水平.
关键词: 卫星/
磁场/
磁洁净/
磁场标定/
低轨
Abstract:In order to improve the accuracy of space magnetic field detection, the magnetometer of magnetic satellite is usually installed on the top of its long boom, meanwhile the magnetic field interference on magnetometer position is reduced by controlling satellite magnetic cleanliness. Based on the characteristics of LEO magnetic satellite, a series of methods are proposed, including high-precision measurement for the extremely weak interference magnetic field in the zero magnetic field environment, calibration of the satellite induced magnetic field in the orbital magnetic and processing uncertain quantity of the remaining magnetic field. The accuracy of space magnetic field detection can be effectively improved by implementing strict calibration and correcting data by virtue of these methods. These methods have been applied to the seismo-electromagnetic satellite, reducing the uncertain value of magnetic field interference of the satellite by one order of magnitude, which reaches above 0.3 nT.
Key words:Satellite/
Magnetic field/
Magnetic cleanliness/
Magnetic field calibration/
Low Earth Orbit (LEO)
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