一种新的运动磁目标定位算法  

A Novel Localization Algorithm for Mobile Magnetic Targets

作　　者：唐莉莉[1,2] 宋勇[1] 童官军[1] 刘石[1,2] 李宝清[1] 袁晓兵[1] 

机构地区：[1]中国科学院上海微系统与信息技术研究所无线传感网实验室,上海200050 [2]中国科学院研究生院,北京100049

出　　处：《传感技术学报》2011年第7期996-1000,共5页Chinese Journal of Sensors and Actuators

摘　　要：给出了一种简单实用的运动磁目标定位算法。基于目标磁偶极子模型下的磁场表达式,推导出了目标相对于传感器的方位角的通用解析表达式,将求解目标方位角的问题转化为求解目标磁场的方向角和两者的偏差角的问题,从而实现利用单个静止的平面四轴磁通门传感器实现目标定位。实验结果表明该方法是切实有效的,而且实时性和可靠性好,估计的方位角的绝对误差在10°以内。A novel algorithm to locate mobile magnetic targets is proposed.Based on the classical magnetic dipole model,a general mathematical expression for the azimuth is derived from the analytical formula of dipole magnetic field.And the azimuth estimation problem is transformed into the problem of measuring the direction of target magnetic field and its deviation to the azimuth.The direction of target magnetic field and the deviation can be calculated by utilizing the outputs of a horizontal 4-axis fluxgate sensor.The experimental results show that the algorithm is effective and reliable with excellent real-time performance and the absolute error less than 10 degree.

关 键 词：磁目标探测 磁偶极子 目标定位 方位角 磁通门 

分 类 号：TP212.9[自动化与计算机技术—检测技术与自动化装置]