JOM-1型Overhauser磁力仪研制  

Development of JOM-1 Model Overhauser Magnetometer

作　　者：张爽[1] 何佳泷 陈曙东[1] 王娇妮[1] 郭欣[2] 李海英[2] 

机构地区：[1]吉林大学电子科学与工程学院,长春130012 [2]吉林大学物理学院,长春130012

出　　处：《吉林大学学报（信息科学版）》2015年第4期409-415,共7页Journal of Jilin University（Information Science Edition）

基　　金：吉林省产业技术研究与开发专项基金资助项目(2013C035-1)

摘　　要：为提高磁力仪的性能,给出了自主研发的JOM-1型Overhauser磁力仪的工作原理及系统硬件构成,主要介绍了射频激励电路、信号调理电路、工作时序、仪器的噪声水平及实验结果。野外测试表明该仪器实现了数据采集、显示、存储和查看等基本功能,信号的初始信噪比为96∶1,约为自主研发的JPM-1型普通质子旋进磁力仪的3倍,灵敏度可达0.14 n T。Overhauser magnetometer is a high sensitivity magnetostatic measuring instrument based on Overhauser effect. It has become a hot research topic in recent years, because it has high performance and is widely used. The working principle and hardware structure of JOM-1 Overhauser magnetometer are given and some key parts such as RF （Radio Frequency） excitation circuit, signal processing circuit, working sequence, noise level and experimental results are introduced. Field tests indicate that JOM-1 Overhauser magnetometer has achieved basic functions such as data collection, display, storage, viewing and so on. 0.14 nT sensitivity is obtained and initial signal-to-noise ratio can reach 96 ： 1, which is three times of the JPM-1 proton precession magnetometer fabricated by our lab.

关 键 词：Overhauser磁力仪 质子旋进磁力仪 灵敏度 射频激励 信号调理 

分 类 号：P631[天文地球—地质矿产勘探] TN8[天文地球—地质学]