全相闪电磁场测量系统实现与试验  

Realization and Experiment of All-Phase Magnetic Field Measurement System

作　　者：殷启元[1,2] 张义军[2,3] 吕伟涛[2,3] 陈绿文[2,4] 

机构地区：[1]成都信息工程学院电子工程学院,成都610225 [2]中国气象科学研究院雷电物理和防护工程实验室 [3]中国气象科学研究院灾害天气国家重点实验室,北京100081 [4]广东省防雷中心,广州510080

出　　处：《气象科技》2009年第6期713-718,共6页Meteorological Science and Technology

基　　金：公益性行业(气象)科研专项(GYHY(QX)200706022);自然科学基金(40875003)资助

摘　　要：根据电磁感应法原理,研制了一套全相闪电磁场测量系统。该系统磁场测量天线由3个正交的半径为15 cm的环状天线构成,由高速大容量示波记录仪完成数据采集,采用基于全电路表达式的脉冲磁场数字重构法对数据进行还原处理。利用该系统,结合电场变化观测系统和高速摄像系统,在广东省从化地区开展了闪电的光、电、磁场同步观测试验。试验资料分析表明,该套全相磁场测量系统观测的闪电磁场变化基本真实可靠。In order to have a better understanding of the characteristics of lightning magnetic fields, an allphase magnetic field measurement system is developed, in which the electromagnetic induction method is used. The sensor consists of three 15 cm radius orthogonal magnetic loops. The data is recorded by an oscilloscope with high speed and high capacity. The pulse magnetic field waveform digital reconstruction method based on the full circuit equation is adopted in data restoration processing. The system is calibrated by a current generator with a maximum output of 6 kA in laboratory. The synchronized electric and magnetic observation data of two lightning flashes observed in the field experiment conducted in Conghua, Guangdong Province, is analyzed. It is found that the all-phase magnetic field measurement system can reliably reflect lightning magnetic field change.

关 键 词：全相磁场测量系统电磁感应法地闪电 磁场变化波形 

分 类 号：P427.3[天文地球—大气科学及气象学] U292.917[交通运输工程—交通运输规划与管理]