摘要
为了解决大气电场仪探测数据受周边环境影响的问题,利用有限差分法模拟环境建筑及仪器本身对电场分布的影响,并给出对应的修正关系式。结果表明：建筑的存在使电场发生畸变,仪器距离建筑较近的时候,电场受建筑屏蔽作用显著,屏蔽距离以内电场修正系数与距离呈指数关系;当仪器置于建筑物顶端时,建筑物所处高度处的电场修正系数随建筑高度的变化较明显,随宽度变化不明显,随仪器本身高度的变化最大,在地面处和楼顶时同样高度的仪器对应的修正系数楼顶的要大于地面。
In order to solve the influence of environmental factors and instrument itself on atmospheric electric field instrument data,this paper simulated distortion of electric field caused by electric field instrument installation height and environmental features as well as gave correction formula under the homogeneous field background before lightning,using the finite difference method.The results shows that the ground electric field correction coefficient and instrument height tends to quadratic function relation.The exists of environmental features leads to electric field distortion and shield effect of electric field;when electric meter is at the top of the building,the correction coefficient of electric field at building height changing with the building height is obvious,while the width is not obvious,along with the instrument height is most obvious,the correction coefficient of the roof is bigger than on the ground in the same instrument height.
作者
黄钰
吴安坤
张淑霞
Huang Yu;Wu Ankun;Zhang Shuxia(Meteorological Disaster Defense Technology Center of Guizhou Province,Guiyang 550000, Chin)
出处
《电子测量技术》
2018年第1期35-38,共4页
Electronic Measurement Technology
关键词
大气电场
畸变
屏蔽
atmospheric electric field
distortion
shielding
