摘要
对电子罗盘磁差补偿的椭球拟合校准法进行深入研究,并分解为硬磁、软磁、比例系数校准和未对准误差校准,分别进行仿真分析,直观给出各部分磁差对拟合后的椭球拟合影响。与工业级高精度HMR3300型电子指南针进行对比实验,给出基于HMC5883L磁阻传感器的自制电子罗盘经过椭球拟合校准后的导航精度。
Ellipsoid fitting calibration method used for magnetic compensation on electronic compass is researched, decompose the algorithm into four parts which are hard-magnetic, soft-magnetic, scale coefficient and misalignment error calibration, and simulate and analyze effect of magnetic error of each part on ellpsoid fitting is proposed vividly. Use HMR3300, navigation precision of electronic compass is given, to compare with HMC5883L which is manufactured in the lab, and the result is satisfied.
出处
《传感器与微系统》
CSCD
2016年第9期39-41,45,共4页
Transducer and Microsystem Technologies
关键词
椭球拟合
电子罗盘
磁补偿
ellipsoid fitting
electronic compass
magnetic compensation
