基于差分的磁偶极子单点张量定位方法  

Magnetic Dipole Single-point Tensor Positioning Based on the Difference Method

作　　者：李光[1] 随阳轶[1] 刘丽敏[1] 林君[1] 

机构地区：[1]吉林大学仪器科学与电气工程学院,吉林长春130026

出　　处：《探测与控制学报》2012年第5期50-54,共5页Journal of Detection & Control

基　　金：国家自然科学基金青年科学基金项目资助(41104115)

摘　　要：采用单点测量的磁场矢量及磁张量数据进行磁偶极子定位的方法,受地磁场干扰大,极大地限制了其实用性。为此,提出基于差分的磁偶极子单点张量定位方法,设计出磁张量测量系统。该方法采用差分方式,消除地磁场及其他共模干扰。仿真结果表明:在地磁场存在的情况下原方法基本上无法实现定位,而该方法则具有较高的定位精度,当探测距离为17.320 5m时,定位误差仅有0.002 3m。The magnetic dipole positioning method which uses single-point measurement of the magnetic field vector and the magnetic tensor data are strongly interfered by the geomagnetic field, which greatly limits its use fulness. An magnetic dipole single-point tensor positioning based on the difference method was proposed. This method used differential mode,and could eliminate the geomagnetic field and other commo^mode interference. Simulation results showed that, in the presence of geomagnetic method, the original method was basically impos- sible to achieve the position, but this method had a higher positioning accuracy at the distance of 17. 320 5 m with the positioning error of 0. 002 3 m.

关 键 词：磁张量 磁偶极子 定位 地磁场 

分 类 号：P318[天文地球—固体地球物理学]