基于光泵磁探头的磁场矢量测量  

Magnetic-field Vector Measurement Based on Optical-pumping Magnetic Probe

作　　者：林春生[1] 杨振宇[1] 周建军[1] 

机构地区：[1]海军工程大学兵器工程系,湖北武汉430033

出　　处：《探测与控制学报》2014年第3期16-19,24,共5页Journal of Detection & Control

摘　　要：针对三轴磁通门磁强计难以实现高分辨率、高精度磁场矢量测量的问题,提出基于光泵磁探头的磁场矢量测量方法。该方法采用高精度光泵磁强计作为敏感器件,附加一个正交三轴线圈,采用反馈测量的工作方式。推导得到根据光泵读数解算磁场三分量的计算模型,仿真结果表明,此方法的误差和零点长期稳定性可达到1 nT量级,分辨率可达到0.01 nT,在地磁背景中的矢量测量精度比磁通门高1--2个量级。A magnetic-field vector measurement method based on optical-pumping magnetic probe was proposed in view of the problem that it was difficult to achieve high resolution and precision magnetic-field vector measurements by a triaxial flux-gate magnetometer.High precision optical-pumping magnetometers were used for sensitive devices in this method, whose working mode was feedback measurements with the addition of triaxial coils.The magnetic-field three-component model caiculation by magnetometer reading was given.Simulation results show that this method’s error and long-term sta-bility of zero is 1nT,and the resolution is 0.01 nT.The vector measurement precision is 1~2 magnitude order higher than the flux-gate magnetometer in geomagnetic background field.

关 键 词：工程测量技术 磁场矢量 测量 光泵磁强计 

分 类 号：TH762.3[机械工程—仪器科学与技术]