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An in-field calibration method for magnetic array error
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AI
DOI：10.1016/j.measurement.2025.116974.png)
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摘要
En 中文
In this study, a novel in-field calibration method with less computation time for calibrating the error of the three-axis magnetometer (TAM) array was proposed. The proposed approach was developed using Gaussian process (GP) regression. The calibration method helped to bypass the mathematical error model of the TAM array and alleviated the model's inadequacy. The method reduced the magnetometer errors and misaligned errors between magnetometers and magnetic interference without other references. The efficacy of the proposed calibration method was first verified by simulations, which illustrated that the maximum peak-peak error of the total magnetic field for all TAMs decreased from the order of 104 nT to less than 1 nT in a complete 360 degrees rotation, and the differences between the three geomagnetic field components of different TAMs reduced from the order of 103 nT to less than 1 nT. In addition, simulations also illustrated that this correction method can effectively improve the locating performance with locating error dropping from 3.34 m to 0.06 m. In-field experimental tests verified the efficacy of the proposed method, and the results yielded a high-accuracy objective performance.
Keyword:
Error correction
In-field
Three-axis magnetometer
期刊
IF:
5.6
论文数:
2.0W
被引数:
5.4W
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