近零场高精度矢量原子磁力仪测试标定方法

doi:10.3969/j.issn.1000-1158.2025.01.13

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Abstract Vector atomic magnetometers for deep space magnetic field detection applications not only need to have high sensitivity in weak fields， but also need to have long-term accurate measurement capabilities. Therefore， it is necessary to test and calibrate the sensitivity and linearity of the vector atomic magnetometer in the near zero field， especially the performance of accuracy. At present， there is no device that can directly test and calibrate the magnetometer under weak magnetic field in the national standards and metrology institution. An indirect test and calibration device and method under near zero field is proposed. In the magnetic shielding cylinder， the magnetic field generating coil is calibrated by the calibrated CPT atomic magnetometer. The calibrated coil generates a weak artificial magnetic field. Combined with the zero-point rotation test calibration method， the accuracy of the magnetometer is calibrated. The test calibration and uncertainty analysis of the near zero-field high precision atomic magnetometer sensor are completed. The linearity within the ±5 nT range is 0.03%， the zero-point uncertainty is 12.90 pT， and the accuracy is 15.80 pT.

Key words： magnetic metrology vector atomic magnetometer near zero-field test and calibration linearity uncertainty analysis

Received: 24 April 2024 Published: 14 January 2025

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TB972

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	Articles by authors
	WU Shuang
	XUE Hongbo
	FU Jiqing
	SONG Wei
	TAO Ran
	MIN Zewen
	ZHANG Wei
	WANG Jindong
	LI Hui
	LI Lei

Cite this article:

WU Shuang,XUE Hongbo,FU Jiqing, et al. Test and Calibration Method for High Accuracy Vector Atomic Magnetometer in Near Zero⁃field[J]. Acta Metrologica Sinica, 2025, 46(1): 80-86.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2025.01.13 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2025/V46/I1/80

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