基于GMap.net雷电监测预警系统设计与实现

基于GMap.设计的雷电监测预警系统,以大气电场测量为基础,利用地面电场仪组网,实现自动、连续、实时监测强雷电活动中地面产生的电场强度变化,存储大气电场数据,回放历史数据,同时采用时序差分法设置三级电场阈值,使得预警更加准确,提高准确率,减少虚警率。通过对2011-05-11南京六合地区的雷暴作为个例进行分析演示发现：在测站范围内,当电场的快变抖动出现并且电场值达到一定阈值时,电场值会随着时间增加而达到事先设定的闪电出现的强度,很少会有电场快变而没有产生闪电的情况出现,预警效果相对理想。

Design and implementation of lightning monitoring and early warning system based on GMap.net

According to GMap.net lightning monitoring and warning system,based on the atmospheric electric field strength measurement,and by means of ground electric field instrument networking,it comes true that automatic,continuous and real-time monitor a strong electric field intensity change generated by ground lightning activity.The atmospheric electric field data were stored and the historical data were played back.Using the temporal difference methods set up three warning thresholds,which improve the accuracy of early warning.As an example of thunderstorms analysis of Liuhe district in Nanjing on May 11,2011,within the range of the station,when the electric field of the fast changing jitter occurs within a certain time and several times of the value reaches a certain threshold,the value of the electric field increase to achieve the intensity of the lightning protection zone as time goes by.The rapid electric jitter occurs in a little but the situation did not produce lightning.In a word,warning effect is relatively satisfactory.