火星车磁通门磁强计技术  

The ROVER Fluxgate Magnetometer

作　　者：赵琳[1,2] 杜爱民[1,2,3] 乔东海[4] 孙树全 张莹[1,2,3] 区家明[1,2] 郭志芳 李智[1,2] 冯晓[1,2] 顾少燃 李峰[4] ZHAO Lin;DU Aimin;QIAO Donghai;SUN Shuquan;ZHANG Ying;OU Jiaming;GUO Zhifang(Key Laboratory of Earth and Planetary Physics,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China;Institutions of Earth Science,Chinese Academy of Sciences,Beijing 100029,China;University of Chinese Academy of Sciences,Beijing 100049,China;Soochow University,Suzhou 215006,China)

机构地区：[1]中国科学院地质与地球物理研究所地球与行星物理重点实验室,北京100029 [2]中国科学院地球科学研究院,北京100029 [3]中国科学院大学,北京100049 [4]苏州大学,苏州215006

出　　处：《深空探测学报》2018年第5期472-477,共6页Journal Of Deep Space Exploration

摘　　要：火星磁场测量是国际火星探测任务的焦点之一,中国首次火星磁测任务通过在巡视器(即火星车)和环绕器上同时搭载磁强计,实现对火星磁场的火–空联合观测。巡视器磁强计载荷选用双探头三轴磁通门磁强计,采用亥姆霍兹补偿线圈型探头技术和全数字闭环反馈电路技术,实现空间磁场的高精度同点测量。单机在设计上考虑了可靠性安全性设计和空间环境适应性设计。经地面标定,单机量程可达到±6.5万nT,噪声水平优于0.01 nT/√Hz,分辨率达到了0.01 nT。Martian magnetic field measurement is one of the focuses of international Mars exploration mission. China's first Mars magnetic measurement mission would carry magnetometers on the rover and the orbiter to achieve joint observation of the surface magnetic field and the spatial magnetic field. Dual tri-axial fluxgate magnetometer would be carried on the rover , which adopts Helmholtz compensation coil probe technology and all digital closed-loop feedback circuit technology to realize high precision same-point measurement of space magnetic field. Reliability, safety and space environment adaptability of the instrument are well considered in the design. According to ground calibration, the range of the ROVER fluxgate magnetometer is ± 65 000 nT , the noise level is 0.01 nT/√Hz , and the resolution achieves 0.01 nT.

关 键 词：磁通门 磁强计 火星磁场测量 

分 类 号：TP212.2[自动化与计算机技术—检测技术与自动化装置]