Research on self-calibration method for tri-axial magnetic compass

摘要：

　　A novel method for the self-calibration of a tri-axial magnetic compass is discussed in this paper.Firstly,the conventional calibration method of tri-axial magnetometer in compass based on ellipsoid fitting is theoretically analyzed,and its weakness is demonstrated.Secondly,an improved calibration scheme for both the magnetometer and accelerometer in a tri-axial magnetic compass is proposed,which utilize the invariance of the dot product of two constant vectors and can overcome the disadvantages of the ellipsoid fitting method.The proposed method is verified by numerical simulation and experiment,and the results prove its superiority over the conventional algorithm of ellipsoid fitting.

关键词： magnetic compass self-calibration magnetometer accelerometer ellipsoid fitting dot product invariance

作者: LI Zhi LI Xiang

作者单位: Guilin University of Electronic Technology, Guilin 541004, China;Xidian University, Xi’an 710071, Ch Xidian University, Xi’an 710071, China

会议类型: 国际会议

会议名称: 2012第八届精密工程测量和仪器仪表国际研讨会(ISPEMI2012)

会议地点: 成都

会议语种:英文

页码: 1-6

在线出版日期: 2012-08-08（万方平台首次上网日期，不代表论文的发表时间）