Ground Calibration with Orthogonality Correction for Tri-Axis Fluxgate Magnetometer for CAS500-3
This paper presents ground calibration and orthogonality correction methods for the tri-axis fluxgate magnetometer (FGM), named as adaptive in-phase magnetometer (AIMAG), aboard the CAS500-3 satellite. The orthogonality errors of the FGM among the axes can lead to significant inaccuracies in magne...
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| Main Authors: | , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
The Korean Space Science Society
2024-12-01
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| Series: | Journal of Astronomy and Space Sciences |
| Subjects: | |
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| Summary: | This paper presents ground calibration and orthogonality correction methods for the tri-axis fluxgate magnetometer (FGM),
named as adaptive in-phase magnetometer (AIMAG), aboard the CAS500-3 satellite. The orthogonality errors of the FGM
among the axes can lead to significant inaccuracies in magnetic field measurements. In this study, we employed Helmholtz
coils and an autocollimator to apply controlled magnetic fields and adjust the magnetometer’s alignment. By deriving the
correction matrix, we could transfer the sensor axes to the ideal orthogonal coordinate system. We validated the correction
method by analyzing the sensor’s output under various magnetic field conditions. This correction method is expected to
enhance the in-flight magnetic field measurements of the CAS500-3 satellite. |
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| ISSN: | 2093-5587 2093-1409 |