地面感应电场对静电探测器影响分析

Analysis of Effect of Ground Inducted Electric Field on Electrostatic Detector

用镜像法对空中带电目标的近地静电场进行分析,论述了其地面感应电场在大地介质成份不同、目标与探测器相对位置不同等情况下,对"电极扫描式"以及"短路轴向电极式"两种被动静电探测器最大探测距离产生衰减的规律;并给出探测器处目标电场方程及几种典型变化示意图。

Near surface electrostatic field inducted by charged air target is analyzed through mirror image method; on the conditions of defferent component of the ground medium and the different relative position between the target and the detector, the attenuation rule of the maximal detecting distance of the electrode scanning type and short-circuit longitudinal type passive electrostatic detectors influenced by the inducted ground surface electric field is discussed; and the target electric field equation at the position of the detector and sketch of several typical variation of the electric field of the target are shown in this paper.