电子器件2017，Vol.40Issue(5)：1191-1195,5.DOI:10.3969/j.issn.1005-9490.2017.05.027
一种手持式MEMS磁力计的罗差校正方法
Error Calibration Method of Magnetic Deviation for Hand-Held MEMS Magnetometer
摘要
Abstract
Due to the limitation of heading accuracy in Hand-held MEMS magnetometer,a magnetometer error model was established to improve its accuracy,which is based on the analysis of magnetometer error,meanwhile,the formula of magnetic deviation coefficient was deduced. Some methods of dealing with the data,which included elliptic assump-tion,least square method, unwrapping and smoothing window filter, were adopted to reduce the heading error of magnetometer. The experiment shows that the operation is simple. Just holding a set of MEMS sensor and rotating it around the whole operation is completed. This method is of stronger anti-noise ability,whose corrected accuracy of heading angle is better than 1°.关键词
MEMS传感器/罗差校正/椭圆拟合/磁力计/最小二乘法Key words
MEMS sensor/magnetic deviation calibration/ellipse fitting method/magnetometer/least squares method分类
信息技术与安全科学引用本文复制引用
李思民,蔡成林,王亚娜,曹振强..一种手持式MEMS磁力计的罗差校正方法[J].电子器件,2017,40(5):1191-1195,5.基金项目
空天无源探测平台的差分定位体制研究项目( 612630028) （ 612630028）
