甘肃省闪电定位网误差及探测效率评估

Assessment of error and detection efficiency of Gansu lightning orientation network

从时差法闪电定位原理出发,分析了闪电定位原理存在的问题及其定位的误差来源,采用计算机模拟的方法,实现了对闪电的定位误差评估和探测效率评估;文章最后以甘肃兰州区域气象中心和甘肃河西地区闪电定位网为例,结合闪电定位评估软件,进行了闪电定位网的误差评估与探测效率评估,同时结合甘肃省的地图,画出了两个地区闪电定位网的实际误差效果图和探测效率图,得出了兰州区域气象中心的闪电定位网的定位精度和探测效率优于甘肃河西地区的结论。为将来闪电定位网的后续布设提供了选址依据。

The existing problems in lightning orientation and error sources are investigated systematically based on the time-of-arrival（TOA） lightning orientation theory.The assessment of error and detection efficiency lightning orientation are performed using thecomputational simulation method.By taking the example of lightning orientation network of Lanzhou regional meteorological center and Hexi corridor district, this paper carries out the assessment of error and detection efficiency of lightning orientation network with assessment software. Meanwhile, combined with the map of Gansu, effective pictures of actual error and detection efficiency of these two areas are drawn.The results indicate that the lightning orientation network of Lanzhou Regional Meteorological Center has better accuracy and detection efficiency than that of Hexi Corridor District,which provides the guidelines for the future lightning orientation network construction.