基于八轴结构的磁张量目标定位方法误差分析  

Error Analysis of Target Location Method for Magnetic Tensor Detection Based on Eight Axis Structure

作　　者：陈菲菲 杨准 于力 CHEN Fei-fei;YANG Zhun;YU Li(China Academy of Electronics and Information Technology,Beijing 100041,China)

机构地区：[1]中国电子科学研究院,北京100041

出　　处：《中国电子科学研究院学报》2020年第6期551-556,共6页Journal of China Academy of Electronics and Information Technology

摘　　要：磁异探测是水下目标非声探测的重要手段之一,具备磁性目标的识别与定位能力。文中基于磁偶极子模型原理,对两种八轴磁力仪结构的磁张量目标探测方法进行仿真分析。展示了在不同磁力仪基线长度与不同空间位置下,两种结构测量的磁场强度、磁场梯度与目标位置的固有误差,并展示了磁力仪测量分辨率对测量误差的影响。仿真结果证明,磁力仪测量分辨率对目标定位影响大,1 pT测量分辨率已大大限制磁性目标定位测量范围。Magnetic anomaly detection is one of the important means of underwater non-acoustic target detection,which has the ability of magnetic target recognition and location.This paper showed two structures of magnetic tensor detection,composed of eight uniaxial vector magnetometers.The magnetic intensity error,the magnetic gradient error and the location error of two structures under different magnetometer baseline lengths and spatial locations were simulated based on the model of magnetic dipole.The influence of the resolution of magnetometers on the detection error was also shown in this paper.Results showed that the measurement resolution of magnetometer had a great influence on the target location,and the measurement resolution of 1 pT had greatly limited the measurement range of magnetic target location.

关 键 词：磁异探测 磁张量 定位 误差分析 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]