基于铯光泵磁力仪的地磁噪声补偿技术  

Geomagnetic noise compensation technology based on cesium optical-pumping magnetometer

作　　者：谢胤 罗方雪 张樊 王羚 柳占新[1] XIE Yin;LUO Fangxue;ZHANG Fan;WANG Ling;LIU Zhanxin(1^(st) Class Weak Magnetic Metering station of NDM,No.710 institute,CSSC,Yichang 443001,China)

机构地区：[1]中国船舶重工集团公司第七一〇研究所国防科技工业弱磁一级计量站,湖北宜昌443001

出　　处：《计测技术》2022年第1期26-31,共6页Metrology & Measurement Technology

摘　　要：针对高灵敏度磁传感器的计量与标定,开展了基于铯光泵磁力仪的地磁噪声补偿研究。在原子谱灯铯光泵磁力仪基础上,用激光替换原子谱灯作为铯光泵磁力仪的光源,设计激光光泵磁力仪,应用于地磁噪声补偿系统,再通过实验对基于以上两型光泵磁力仪地磁噪声补偿系统的磁场补偿能力并进行了分析,实验研究结果表明,基于以上两型铯光泵磁力仪的地磁噪声补偿系统均能复现功率谱密度优于0.5 pT/Hz1/2@1 Hz和噪声峰-峰值低于10.8 pT(10 Hz采样率)的磁场,且激光光泵磁力仪在较大磁场下补偿效果更好。该结果为设计用于磁传感器计量与标定的地磁噪声补偿系统提供了重要参考。Focusing on the measurement and calibration of high⁃sensitivity magnetic sensors,a study on geomagnetic noise com⁃pensation based on cesium optical⁃pumping magnetometer was carried out.On the basis of the atomic spectrum lamp cesium optical⁃pumping magnetometer,the study replaced atomic spectrum lamp with laser as the light source of the cesium optical⁃pumping magne⁃tometer,designed the laser optical⁃pumping magnetometer,and applied it to the geomagnetic noise compensation system.The magnetic field compensation capability of the optical⁃pumping magnetometers geomagnetic noise compensation system was analyzed through ex⁃periments on the two types of the optical⁃pumping magnetometers.Experimental results show that the geomagnetic noise compensation system based on the above two types of cesium optical⁃pumping magnetometers both can reproduce magnetic field with a noise power spectral density better than 0.5 pT/Hz1/2@1 Hz and a noise peak⁃to⁃peak lower than 10.8 pT(10 Hz sampling rate),and the laser optical⁃pumping magnetometer has better compensation effect under large magnetic field.The results provide important reference for design⁃ing geomagnetic noise compensation systems for magnetic sensor metrology and calibration.

关 键 词：电磁测量 光泵磁力仪 激光 地磁噪声补偿 

分 类 号：TB96[机械工程—光学工程] O441.5[一般工业技术—计量学]