摘要
针对基于磁矢量测量的磁性目标跟踪具有高度非线性且无法得到解析最优解的问题,提出了基于磁传感器阵列的磁性目标跟踪方法.该方法首先利用设计的磁传感器阵列测量磁性目标产生的磁梯度张量信息进行目标方位的单点估计,然后联合磁标量、磁梯度张量各分量及张量矩阵的特征值实现了磁性目标位置和磁矩的单点估计,在连续的单点定位基础上完成了磁性目标运动速度的估计和运动轨迹的实时跟踪.最后利用磁通门传感器搭建了传感器阵列,进行了小型磁性目标的跟踪实验,实验结果表明该连续单点定位方法具有较好的目标实时跟踪能力.
The magnetic target tracking problem based on magnetic vector measurements is characterized by nonlinear equations whose optimal analytical solution cannot be obtained.So the tracking method for magnetic target based on magnetometer array was proposed in this paper.First,the magnetic gradient tensor measured by the new designed magnetometer array was used to achieve direction estimation for the magentic target.Then,the magnetic scalar value,magentic gradient tensor and eigenvalues of tensor matrix were combined to estimate the location and magnetic moment of the magentic target.Finally,the estimation of the motion rate and real-time trajectory tracking magnetic target was accomplished based on the successive single-point localization.The real magnetometer array was constructed based on Fluxgate magnetometers and tracking experiments of small magnetic target were conducted.The experimental results show that the proposed method can better perform real-time tracking.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2015年第12期1748-1752,共5页
Journal of Shanghai Jiaotong University
基金
国防科研项目资助
关键词
磁梯度张量
跟踪
磁偶极子
定位
特征值分析
magnetic gradient tensor
tracking
magnetic dipole
localization
eigenvalue analysis
