摘要
基于磁场梯度张量的探测技术具有高分辨率、高精度等优点,是航天器多磁源分辨的有效方法。文章建立了航天器磁场源模型,提出了航天器多磁场源模型拟合方法,利用磁场梯度张量的主不变量的极值确定磁场源个数和水平位置,然后联合欧拉方程计算磁场源深度,完成航天器内部多磁场源仿真与计算,分辨率最高可达0.012 m,满足工程需求。该研究开辟了航天器内部多磁场源目标探测的新途径。
The multi-magnetic source resolution in spacecraft is a difficult problem in the field of magneticsurvey.The technology based on the magnetic gradient tensor can be used for high resolution and high precisiondetection.In this paper,a spacecraft magnetic source model is established,and a multi-magnetic source modelfitting method for spacecraft is proposed.The principal invariants of the magnetic field gradient tensor are usedto determine the number and the horizontal location of the source,and the Euler equations are combined tocomplete the multi-magnetic source depth calculation,with best resolution up to0.012m,meeting theengineering requirements.The study opens up a new way of the multi-magnetic source target detection inspacecraft.
作者
徐超群
易忠
王斌
刘超波
XU Chaoqun;YI Zhong;WANG Bin;LIU Chaobo(Science and Technology on Reliability and Environmental Engineering Laboratory,Beijing Institute of Spacecraft Environment Engineering,Beijing 100094, China;Beijing Institute of Spacecraft Environment Engineering, Beijing 100094, China)
出处
《航天器环境工程》
2017年第4期398-402,共5页
Spacecraft Environment Engineering
基金
国家自然科学基金青年科学基金项目"基于磁场梯度张量的多磁源目标反演方法研究"(编号:51207011)
关键词
航天器
多磁场源
拟合方法
磁梯度张量
主不变量
spacecraft
multi-magnetic source
fitting method
magnetic gradient tensor
principal invariants
