深空探测中磁强计在轨标定研究进展
Research progress on in-flight calibration of the magnetometer in deep space exploration
摘要
Abstract
Magnetic field measurements play a crucial role in deep space exploration,contributing signific-antly to our understanding of planetary habitability and the space plasma environment.Among the various instru-ments employed in space exploration missions,the fluxgate magnetometer stands out as a widely used tool.However,its zero offset undergoes gradual changes,necessitating regular in-flight calibration.This article compre-hensively reviews in-flight calibration methods for spaceborne magnetometers in deep space exploration,lever-aging physical phenomena inherent to the space environment.The methods for calculating the zero offset can be di-vided into two categories.The first group employs formulas,including the Belcher method,Hedgecock method,Davis-Smith method,and both one-dimensional and three-dimensional mirror mode methods.Notably,the Davis-Smith method emerges as the optimal choice among these approaches.The second group employs probability-based solutions,constituting the in-flight calibration technology of the new generation,which encompasses six al-gorithms.This innovative technology utilizes phenomena such as Alfvén waves,magnetic mirror structures,and current sheets for in-flight calibration.Moreover,this technology can leverage interplanetary magnetic field data,specifically requiring a sufficient data amount(e.g.,4 hours)to calculate the zero offset.Compared to the Davis-Smith method,the in-flight calibration technology of the new generation demonstrates good compatibility,allow-ing for the simultaneous use of different physical phenomena,and scalability.This technology extends its applicabi-lity beyond solar wind,enabling in-flight calibration in the Martian magnetosheath.Currently,this technology has successfully provided calibration services for the magnetic field data of the Tianwen-1 orbiter.关键词
深空探测/磁强计/磁补偿/在轨标定/行星际磁场/阿尔芬波/磁镜结构/电流片Key words
deep space exploration/magnetometer/zero offset/in-flight calibration/interplanetary magnetic field/Alfvén wave/mirror mode structure/current sheet分类
地球科学引用本文复制引用
王国强..深空探测中磁强计在轨标定研究进展[J].地球与行星物理论评（中英文）,2024,55(5):563-582,20.基金项目
国家自然科学基金资助项目(42130204,42241155) （42130204,42241155）
广东省基础与应用基础研究基金资助项目(2022A1515011698,2023A1515030132) （2022A1515011698,2023A1515030132）
深圳市科技计划资助项目(JCYJ20210324121412034) （JCYJ20210324121412034）
中央高校基本科研业务费专项资金(HIT.OCEF.2022041) （HIT.OCEF.2022041）
深圳重点实验室启动项目(ZDSYS20210702140800001)Supported by the National Natural Science Foundation of China(Grant Nos.42130204,42241155),the Guangdong Basic and Applied Basic Research Foundation(Grant Nos.2022A1515011698,2023A1515030132),the Shenzhen Science and Technology Research Program(Grant No.JCYJ20210324121412034),the Fundamental Research Funds for the Central Universities(Grant No.HIT.OCEF.2022041),and the Shenzhen Key Laboratory Launching Project(Grant No.ZDSYS20210702140800001) （ZDSYS20210702140800001）
