磁性目标的单点磁梯度张量定位方法

Localization of a Magnetic Object Based on Magnetic Gradient Tensor at a Single Point

针对以往利用总量磁场(或梯度)或磁场分量测量的定位方法计算量相对较大、定位实时性较差的不足,根据磁偶极子模型基础上的简易方便的磁梯度张量定位模型,利用一个测点的测量值实现了实时磁性定位。利用平面磁梯度测量系统,对定位模型进行了仿真分析,表明该方法具有较高的精度,磁探仪精度、基线距离等是影响定位误差的主要因素,该方法对实际磁定位工作具有一定的参考价值。

In order to overcome the shortcoming of large amount of calculation and bad real-time performance of the traditional localization methods based on total magnetic field （or gradient） or magnetic component measurement,it is proposed to achieve magnetic localization real-timely by using the measured field values at a single point based on a simple magnetic gradient tensor model. Simulation of the given localization model is analyzed by using plane magnetic gradient measurement system and the result shows high accuracy of the proposed method. There are major factors affecting the localization error such as accuracy of the magnetic detector,baseline interval and so on. The proposed method can be a reference for magnetic localization work.