自适应双参考磁场梯度探测原理  

Principle of Adaptive Detection Using Dual-Magnetic Field Gradient Inputs as Reference

作　　者：林春生[1] 向前[1] 龚沈光[1] 

机构地区：[1]海军工程大学兵器工程系,湖北武汉430033

出　　处：《电子学报》2004年第3期519-521,共3页Acta Electronica Sinica

基　　金：教育部青年骨干教师资助项目

摘　　要：本文使用 4个单分量磁探头构成双参考磁场梯度探测装置 .4个探头组成 3个磁场梯度传感器 ,其中一个为信号传感器 ,另两个为噪声传感器 .以信号传感器输出作为原始输入 ,噪声传感器输出作为参考输入 ,采用自适应噪声抵消技术 ,能有效消除因载体运动产生的涡流磁场及因磁探头方向相对地磁方向改变而引起的噪声输出 .本文提出的双参考磁场梯度探测装置具有工艺性好 ,灵敏度高 ,虚警概率低的优点 。Four single component magnetic field sensors are used to make up of a detection device that has dual-magnetic field gradient inputs as reference. The four single component sensors compose three magnetic field gradient sensors with one as signal sensor, the other as noise sensors. Let the output of signal sensor be the original input and those of noise sensors as reference inputs, then noise caused by the change of orientation of magnetic field sensor relative to geomagnetism orientation can be eliminated efficiently, as well as bow wave due to carrier movement. Practical application shows that the detection device in has good technical property, high sensitivity with low false alarm probability.

关 键 词：双参考磁场梯度探测装置 自适应噪声抵消 探测原理 磁探头 涡流磁场 

分 类 号：O441.5[理学—电磁学]