同步误差对Overhauser磁力仪性能的影响  

Effect of Time Synchronization Error on Performance of Overhauser Magnetometer

作　　者：师晨帅 张爽[1] 陈曙东[1] SHI Chenshuai;ZHANG Shuang;CHEN Shudong(College of Electronic and Science Engineering,Jilin University,Changchun 130012,China)

机构地区：[1]吉林大学电子科学与工程学院,长春130012

出　　处：《吉林大学学报(信息科学版)》2025年第1期14-19,共6页Journal of Jilin University(Information Science Edition)

基　　金：国家自然科学基金资助项目(61771218)。

摘　　要：由于在应用磁法探测时,为抑制地磁日变等低频磁场干扰对测量结果的影响,通常会进行多台磁力仪的同步测量,而时间同步误差对抑制效果有明显影响。为此,以实验室自研的JOM-5SF型Overhauser磁力仪为基础,研究了不同时间同步误差对Overhauser磁力仪在地磁探测和仪器灵敏度评估方面的影响。在吉林大学校园内利用两台Overhauser磁力仪进行实验,将实验结果与专业机构评估结果进行对比分析表明,时间同步误差越小,两仪器磁场值之差跳动范围越小,同步法评估仪器的灵敏度越准确。实验结果对Overhauser磁力仪的研制和应用具有一定参考作用。In order to suppress the influence of low-frequency magnetic field interference,such as geomagnetic diurnal variation,on the measurement results,multiple magnetometers are usually used for synchronous measurement.The time synchronization error has an obvious influence on the suppression effect.The influence of different time synchronization errors is studied on the JOM-5SF Overhauser magnetometer in geomagnetic detection and instrument sensitivity evaluation,based on the magnetometer developed in the laboratory.Two Overhauser magnetometers are used to conduct experiments on the campus of Jilin University.After comparing the experimental results with the evaluation results of professional institutions,it is found that the smaller the time synchronization error,the smaller the difference between the magnetic field values of the two instruments,and the more accurate the sensitivity of the evaluation instruments by the synchronous method.

关 键 词：Overhauser磁力仪 时间同步 灵敏度 地磁探测 

分 类 号：TN98[电子电信—信息与通信工程] TH763[机械工程—仪器科学与技术]