陈晓静,李开成,张明,李沁,何顺帆.雷电地闪探测单元的研制[J].电测与仪表,2012,49(5):52-55. CHEN Xiao-jing , LI Kai-cheng , ZHANG Ming , LI Qin , HE Shun-fan.Development of Lightning Detection Unit[J].Electrical Measurement & Instrumentation,2012,49(5):52-55.
This paper introduces the principle and significance of atmospheric electric field and lightning magnetic field measuring.In the design of the lightning detection unit,plate antenna is used to measure atmospheric field and orthogonal dual-loop antenna is used to measure lightning magnetic field.Programmable Gain Amplifier is designed to enlarge the input dynamic range.Low pass filter with linear phase is designed to filter out jam signals such as some from intra-cloud Lightning.Waveform acquisition and storage of two magnetic channels and one electric channel can be performed based on FPGA.It is designed to extract characteristic quantities of lightning waveform such as strength value,polarity,arrival time of lightning,stroke numbers and stroke strength values,position angle of lightning etc.In addition,characteristic parameters of lightning and waveform data can be stored in hard disk of acquisition station.Lastly this paper gives performance indexes of this lightning detection unit.
