一种地磁矢量测量多源误差校正方法  

A multi-source error correction method for geomagnetic vector measurement

作　　者：罗建刚 李海兵 罗骋[1,2] 李海虎 张峰[1] 王友东 LUO Jiangang;LI Haibing;LUO Cheng;LI Haihu;ZHANG Feng;WANG Youdong(Pilot National Laboratory for Marine Science and Technology,Qingdao 266237,China;Beijing Aerospace Control Device Institute,Beijing 100039,China)

机构地区：[1]青岛海洋科学与技术试点国家实验室,青岛266237 [2]北京航天控制仪器研究所,北京100039

出　　处：《中国惯性技术学报》2021年第2期208-213,220,共7页Journal of Chinese Inertial Technology

基　　金：山东省重大科技创新工程专项(2018SDKJ0201);青岛海洋科学与技术国家实验室“主任基金”(QNLM201715);青岛海洋科学与技术试点国家实验室联合实验室自主研发课题(2019LHHT1301);国家自然科学基金(41976182)。

摘　　要：地磁矢量测量中的误差来源众多,而传统误差校正算法多是对其中部分误差进行校正,导致校正后的磁场数据仍存在剩余误差,在对各项误差的特性进行分析的基础上,提出了一种地磁矢量测量多源误差综合校正方法。首先,基于椭球约束法对地磁总场误差进行校正,得到了正交坐标系下的地磁矢量;然后,将椭球约束法校正后剩余的分量误差与非对准误差合并表述为一个三维旋转矩阵,利用遗传算法估算其中的旋转角度并完成误差校正。实验结果表明,所提出的方法可以对地磁矢量测量的多项误差进行有效校正,经校正后地理参考系下地磁三分量误差的改善率分别达到91.2%、95.2%和95.7%,与传统算法相比校正效果明显提升。There are many error sources in geomagnetic vector measurement,and the traditional error correction algorithm mostly corrects some of them,which leads to residual errors in the corrected magnetic field data.Based on the analysis of the characteristics of various errors,a comprehensive correction method for multi-source errors in geomagnetic vector measurement is proposed.Firstly,the total geomagnetic field error based on ellipsoid constraint method is corrected,and the geomagnetic vector in orthogonal coordinate system is obtained.Then,the residual component error and misalignment error after ellipsoidal constraint correction are combined into a three-dimensional rotation matrix,and the rotation angle is estimated by genetic algorithm to complete the error correction.The experimental results show that the proposed method can effectively correct the errors of geomagnetic vector measurement,and the improvement rates of the three component errors of geomagnetic vector measurement in geographical reference system are 91.2%,95.2%and 95.7%respectively,which is significantly improved compared with the traditional algorithm.

关 键 词：地磁矢量测量 椭球约束 遗传算法 误差校正 

分 类 号：P318.61[天文地球—固体地球物理学]