We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
基于正弦拟合的三轴磁力仪标定方法.
- Authors
贾文抖; 林春生; 林朋飞; 翟国君
- Abstract
Three-axis magnetometer is a measuring tool commonly used for magnetic field measurement, which is widely used in geomagnetic navigation, ocean magnetic survey, geomagnetic exploration and other fields. As a magnetic field vector measuring tool, the magnetic measurement error of the three-axis magnetometer mainly comes from three-axis non-orthogonal, sensitivity inconsistency of sensitive axis and zero offset error. The calibration of the magnetometer affects the measurement performance of the magne- tometer. In order to solve the calibration problem of three-axis magnetometer, the error compensation mod- el for the magnetometer is established. The calibration method of the three - axis magnetometer based on sine fitting is proposed. The output data of the three-axis magnetometer is fitted into the sine curve when the magnetometer is rotated on a plane. The calibration parameters of the three-axis magnetometer are cal- culated by using the information of amplitude, initial angle and translational value of sine curve. The simula- tion results show that the proposed method can solve the calibration problem without the process of nonlin- ear optimization, and the calculated calibration parameters are in good agreement with the set values. The measurement noise has little effect on the three-axis sensitivity coefficient and the non-orthogonal angle.
- Subjects
MAGNETIC field measurements; MAGNETIC measurements; VECTOR fields; MEASUREMENT errors; MAGNETIC fields; GEOMAGNETISM
- Publication
Geomatics & Information Science of Wuhan University, 2019, Vol 44, Issue 9, p1328
- ISSN
1671-8860
- Publication type
Article
- DOI
10.13203/j.whugis20170379