Abstract:

 Quantitative analysis of errors in lightning orientation is the key issue in its app lication. In this paper, errors and their sources in the lightning orientation p rocess are analyzed based on the p rincip le of TOA lightning orientation. With a computationalmodel,we quantify errors in lightning orientation,which can be used to evaluate errors of existing lightning orientation network, and can offer some help in distribution of future lightning location system. As an examp le, the lightning network in Lanzhou CentralMeteorologicalObservatory, it demonstrated that“five stations distribution”had some advantage, which can help to select locations for the future detection network in Gansu p rovince.

Key words:  lightning orientation, error evaluation, Lanzhou, site selection

摘要：

为了对闪电定位的误差进行定量评估,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的评估,可以为已有的闪电定位网络作出有效的定位误差评估,为将要布设的站点提供选址依据。最后以兰州区域气象中心闪电定位网为例,验证了“5站布点”的优越性,为将来甘肃省闪电定位网的后续布设提供了选址依据。

关键词: 闪电定位, 误差评估, 兰州, 选址