Calibration Method of Three-Axis Magnetometer Based on Sine Fitting

JIA Wendou; LIN Chunsheng; LIN Pengfei; ZHAI Guojun

doi:10.13203/j.whugis20170379

Volume 44 Issue 9

Sep. 2019

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Geomatics and Information Science of Wuhan University > 2019 > 44(9): 1328-1333, 1406. > DOI: 10.13203/j.whugis20170379

JIA Wendou, LIN Chunsheng, LIN Pengfei, ZHAI Guojun. Calibration Method of Three-Axis Magnetometer Based on Sine Fitting[J]. Geomatics and Information Science of Wuhan University, 2019, 44(9): 1328-1333, 1406. DOI: 10.13203/j.whugis20170379

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Calibration Method of Three-Axis Magnetometer Based on Sine Fitting

1.
College of Weapon Engineering, Naval University of Engineering, Wuhan 430033, China
2.
Department of Navigation Engineering, Naval University of Engineering, Wuhan 430033, China
3.
Naval Institute of Hydrographic Surveying and Charting, Tianjin 300061, China

Funds:

The National Natural Science Foundation of China 41374018

the National Major Scientific Research Equipment Development Fund Project of China ZDYZ2012-1

More Information

Author Bio:
JIA Wendou, PhD candidate, specializes in the theories and methods of magnetic anomaly data interpretation and the magnetic target detection. E-mail:jiawd163@163.com
Corresponding author:
LIN Chunsheng, PhD, professor. E-mail: lcs_and_zh@163.com
Received Date: June 04, 2018
Published Date: September 04, 2019

Graphical Abstract

Abstract

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 magnetometer. In order to solve the calibration problem of three-axis magnetometer, the error compensation model 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 calculated by using the information of amplitude, initial angle and translational value of sine curve. The simulation results show that the proposed method can solve the calibration problem without the process of nonlinear 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.
- magnetic field measurement,
- three-axis magnetometer,
- calibration,
- sine fitting

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References

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