航空学报 > 2014, Vol. 35 Issue (9): 2522-2529   doi: 10.7527/S1000-6893.2013.0521

空间探测原子磁强计的主动磁补偿实验

楚中毅1,2, 孙晓光1,2, 万双爱1,2, 房建成1,2   

  1. 1. 北京航空航天大学 仪器科学与光电工程学院, 北京 100191;
    2. 北京航空航天大学 惯性技术国家级重点实验室, 北京 100191
  • 收稿日期:2013-11-22 修回日期:2014-01-14 出版日期:2014-09-25 发布日期:2014-03-25
  • 通讯作者: 楚中毅,Tel.:010-82339013 E-mail:chuzy@buaa.edu.cn E-mail:chuzy@buaa.edu.cn
  • 作者简介:楚中毅 男,博士,副教授。主要研究方向:精密机构及其振动控制、 磁屏蔽与磁补偿技术及其应用。Tel:010-82339013 E-mail:chuzy@buaa.edu.cn;孙晓光 男,硕士研究生。主要研究方向:磁屏蔽与磁补偿技术及其应用。Tel:010-82339013 E-mail:sxg_buaa@163.com;万双爱 女,博士研究生。主要研究方向:原子陀螺/原子磁强计应用技术。Tel:010-82339013 E-mail:sawanaspe@buaa.edu.cn;房建成 男,博士,教授。主要研究方向:空间飞行器自主天文导航的理论与方法、 量子科学仪器。Tel:010-82339013 E-mail:fangjiancheng@buaa.edu.cn
  • 基金资助:

    国家自然科学基金(61227902,51375034)

Experiment on Active Magnetic Compensation of Atomic Magnetometer for Space Exploration

CHU Zhongyi1,2, SUN Xiaoguang1,2, WAN Shuang'ai1,2, FANG Jiancheng1,2   

  1. 1. School of Instrument Science and Opto-electronics Engineering, Beihang University, Beijing 100191, China;
    2. Science and Technology on Inertial Laboratory, Beihang University, Beijing 100191, China
  • Received:2013-11-22 Revised:2014-01-14 Online:2014-09-25 Published:2014-03-25
  • Supported by:

    National Natural Science Foundation of China (61227902, 51375034)

摘要:

在空间探测过程中,采用高灵敏无自旋交换弛豫(SERF)原子磁强计在行星表面进行磁场测量是原位物质成分分析的有效手段之一。为了提高SERF原子磁强计的磁场测量灵敏度,必须减小外界磁场扰动对其原子自旋SERF态质量的影响,基于SERF原子磁强计的测量原理,设计了一套主动磁补偿系统。首先,通过测量驱动激光光强获得3个方向的磁场信息;在此基础上,控制电流源和线圈主动产生一个与外界磁场扰动大小相同、方向相反的磁场来补偿扰动,以提高原子自旋SERF态的质量;最后,结合现有的SERF原子磁强计实验平台进行了实验验证。实验结果表明,与手动补偿方式相比,采用本文所述的主动磁补偿系统,可以实时跟踪磁场补偿点,降低系统信号的噪声,补偿了外界磁场的扰动,验证了磁强计主动磁补偿技术的有效性,为后续样机的研制奠定了技术基础。

关键词: 磁强计, 原子, 主动磁补偿, 物质成分分析, 无自旋交换弛豫, 空间探测

Abstract:

The spin-exchange-relaxation-free (SERF) atomic magnetometer with ultrahigh sensitive becomes the most effective measurement to analyze the component of the planet in space exploration. In order to improve the sensitivity of the SERF atomic magnetometer, we must avoid the influence on the SERF regime disturbed by environment magnetic field. In this paper we design an active compensation system based on in-situ magnetic measurement to compensate the magnetic disturbance. Firstly, we get the three-axis magnetic field information according to the measurement of pop-laser, then control the current of coil to generate a magnetic field which is opposite and equal to the disturbance, to keep the SERF regime. Finally, we validat the method with the atomic magnetometer experimental setup. The result shows that compared with the manual compensation method, the system can track the magnetic compensation point in real time, reduce the signal noise and compensate the magnetic disturbance successfully, validating the efficiency of the active compensation system and establishing the technique foundation of the production.

Key words: magnetometer, atomic, active magnetic compensation, material composition analysis, spin-exchange-relaxation-free, space exploration

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