雷电定位系统云闪定位精度图形因素分析

Analysis of Location Accuracy of Cloud-Flash in a Lightning Location System by Figure Factor

针对雷电定位系统中图形因素对云闪定位精度的影响,对于一定的信号探测误差,本文定义了位置面交会角及求解的方法,建立了云闪空间定位误差分布平行六面体图形.同时,计算了平行六面体顶点的点位误差,分析了定位点最大误差和位置面交会角的关系,得出雷电探测站地理位置分布的最佳图形.计算表明:云闪定位误差和地面探测站的位置分布以及地面探测站与闪电点构成的空间关系有关,研究结果可用于探测网工程设计、定位数据处理与精度分析.

According to the influence of figure factor in lightning location system with fixed detection precision, a hexahedral error distribution of cloud-flash position has been constructed through the defini tion of position face angle and elucidation of the involved method. Vertex position error of the hexahedron has been calculated and the relationship between the maximal error and the position face angle has been analyzed, then an optimal figure has been obtained with suitable detection station distribution. The conclusion can be used in the design of the location network, data processing and data analysis.