基于铯光泵磁力仪的地磁噪声补偿技术

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...

Geomagnetic noise compensation technology based on cesium optical-pumping magnetometer

Focusing on the measurement and calibration of high-sensitivity magnetic sensors, a study on geomagnetic noise compensation 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 magnetometer, 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 experiments 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 designing geomagnetic noise compensation systems for magnetic sensor metrology and calibration.