雷电电磁脉冲三维磁场测量系统研究  

Preliminary study on LEMP three dimensional magnetic field measurement system

作　　者：周璧华[1] 马洪亮[1] 李皖[1] 徐云[1] 丁雅菲[1] 

机构地区：[1]解放军理工大学电磁环境效应与电光工程国家重点实验室,江苏南京210007

出　　处：《电波科学学报》2013年第1期39-44,86,共7页Chinese Journal of Radio Science

基　　金：国家自然科学基金(No.61271106)

摘　　要：为测量雷电放电通道电流产生的三维磁场分量,设计制作了雷电电磁脉冲(Lightning Electromagnetic Pulse,LEMP)三维磁场测量系统,并对该系统进行了时域标定、波形矫正和数据修正研究.对自然雷的实测结果进行了数据处理、统计和分析.根据所测三维磁场峰值的大小可判断云闪和地闪;利用所测数据,结合磁定向法和声光差定距法,可确定雷击点的方位和距离,从而实现对地闪雷电流的间接测量;采用由实测数据间接获得的雷电流波形、测点与放电通道的距离,经数值模拟得出的LEMP磁场时间特性与实测结果一致性较好.For the measurement of three dimensional magnetic field components generated by lightning discharging currents, this paper designs lightning electro- magnetic pulse （LEMP） three dimensional magnetic field measurement system, gives time-domain calibration, waveform and data correction, also processes statis- tics and analyzes natural lightning measurement, intraclood lightning can be distin- guished from cloud-to-ground lightning by peak value of measured field. The strik- ing point and distance between the discharging channel can be determined by meg- netic direction finding（MDF） method and acoustic-optic method measurement of lightning currents can be realized. Numerical that the results consist with the measured results. , then the indirect simulation proves

关 键 词：雷电电磁脉冲 三维磁场测量 雷电流 

分 类 号：TN011[电子电信—物理电子学]