空军工程大学学报（自然科学版）2017，Vol.18Issue(6)：34-39,6.DOI:10.3969/j.issn.1009-3516.2017.06.007
基于最小二乘的地磁场测量误差补偿技术
Research on Error Compensation in Geomagnetic Field Measurement Based on Least Squares
摘要
Abstract
The accurate geomagnetic field value is a prerequisite and foundation for the geomagnetic navigation.To solve this problem caused by magnetometer in actual magnetic field measurement influenced by environmental magnetic field,the influence of hard iron and soft iron errors on magnetic measurement is analyzed and the parameterized geomagnetic measurement compensation model is constructed firstly.The geomagnetic field is simulated by using three pairs of Helmholtz coils to generate uniform magnetic field with the software of ANSYS.By setting the different parameters of interference source and rotating the magnetometers in 360 degrees in the simulation model,the three dimensional magnetic field values with and without interference are got.Those parameters of the model are estimated using least squares based algorithm and geomagnetic measurement errors are calibrated.The simulation results show that this compensation method is simple,and easy to use,and has higher error compensation ability,and geomagnetic measurement errors can be reduced from 20 000 nT to several nanoteslas.关键词
地磁导航/地磁场测量/最小二乘法/误差补偿Key words
geomagnetic navigation/geomagnetic field measurement/least squares/error compensation分类
航空航天引用本文复制引用
杨宾峰,樊博宇,胥俊敏,李驰,曹海霞,张辉..基于最小二乘的地磁场测量误差补偿技术[J].空军工程大学学报（自然科学版）,2017,18(6):34-39,6.基金项目
国家自然科学基金(51377172 （）
51577191) （）
电子信息控制重点实验基金 （）
陕西省自然科学基金(2015JM5147) （2015JM5147）
