Preprints
https://doi.org/10.5194/gi-2024-5
https://doi.org/10.5194/gi-2024-5
06 Jun 2024
 | 06 Jun 2024
Status: this preprint is currently under review for the journal GI.

Analysis of Orientation Errors in Triaxial Fluxgate Sensors and Research on Their Calibration Methods

Xiujuan Hu, Shaopeng He, Qin Tian, Alimjan Mamatemin, Pengkun Guo, and Guoping Chang

Abstract. Three-axis magnetic flux gate sensors are widely used in Chinese geomagnetic observatories, but due to their directional errors, it is necessary to study error correction methods to improve measurement accuracy. Firstly, the mechanism of directional errors produced by three-axis magnetic flux gate sensors is analyzed, followed by the development of measurement tools for conducting directional error measurement experiments on the high-precision three-axis magnetic flux gate sensors of the Chinese FGM-01 series. Experimental results show that correcting the Z-axis and D-axis directional errors is essential. The observation data after error correction, whether in terms of the standard deviation of its all-day baseline values or the relative difference magnitude with the reference instrument, significantly decrease, demonstrating the clear correction effect and proving the effectiveness of this correction method.

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Xiujuan Hu, Shaopeng He, Qin Tian, Alimjan Mamatemin, Pengkun Guo, and Guoping Chang

Status: open (until 12 Jul 2024)

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  • RC1: 'Comment on gi-2024-5', Anonymous Referee #1, 16 Jun 2024 reply
Xiujuan Hu, Shaopeng He, Qin Tian, Alimjan Mamatemin, Pengkun Guo, and Guoping Chang
Xiujuan Hu, Shaopeng He, Qin Tian, Alimjan Mamatemin, Pengkun Guo, and Guoping Chang

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Short summary
Nearly 200 sets of three-axis fluxgate magnetometers used in Chinese geomagnetic observatories, but due to their directional errors, it is necessary to study error correction methods to improve measurement accuracy. Experimental results show that correcting the Z-axis and D-axis directional errors is essential. The observation data after error correction demonstrating the clear correction effect. The measurement device used in the experiment is low-cost and easy to disseminate.