Lightning Mapping Array flash detection performance with variable receiver thresholds.
Lightning Mapping Array flash detection performance with variable receiver thresholds.
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DOI：
10.1002/2016jd025159
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发表时间：
2016-07-27
影响因子：
4.4
通讯作者：
Bruning, Eric C.
中科院分区：
文献类型：
--
作者：
Chmielewski, Vanna C.;Bruning, Eric C.
这项研究使用新的蒙特卡罗和曲率矩阵模型模拟来表征参与深对流云和化学领域计划的网络的闪电映射阵列性能。这些开源仿真工具很容易适应实时操作或详细的性能研究。每个模拟都考虑了接收器阈值和位置，以及基于雷暴观测和站触发机制的源功率和闪光大小的参考分布。光源和闪光检测效率与解决方案偏差和可变性相结合，以预测远距离闪光区域失真。定位误差和检测效率高度依赖于站点配置和阈值，尤其是在较长范围内，因此不同网络之间以及网络内方位角的性能变化超出预期。误差特性与之前的研究相符，导致闪光失真随着距离的增加而增加。预测所有网络100公里范围内的闪光检测效率超过95%。 LMA 定位误差和检测效率高度依赖于站点配置和阈值，尤其是在较长距离内 不同 DC3 网络以及每个网络的方位角性能差异很大，但总体误差特征与之前的研究相匹配 所有 DC3 网络 100 公里内预测的闪光检测效率超过 95%，并且这些闪光在较大范围内失真更大
This study characterizes Lightning Mapping Array performance for networks that participated in the Deep Convective Clouds and Chemistry field program using new Monte Carlo and curvature matrix model simulations. These open‐source simulation tools are readily adapted to real‐time operations or detailed studies of performance. Each simulation accounted for receiver threshold and location, as well as a reference distribution of source powers and flash sizes based on thunderstorm observations and the mechanics of station triggering. Source and flash detection efficiency were combined with solution bias and variability to predict flash area distortion at long ranges. Location errors and detection efficiency were highly dependent on the station configuration and thresholds, especially at longer ranges, such that performance varied more than expected across different networks and with azimuth within networks. Error characteristics matched prior studies, which led to an increase in flash distortion with range. Predicted flash detection efficiency exceeded 95% within 100 km of all networks. LMA location errors and detection efficiency are highly dependent on the station configuration and thresholds, especially at longer ranges Performance varied greatly across different DC3 networks and with azimuth in each, but overall error characteristics matched prior studies Predicted flash detection efficiency exceeded 95% within 100 km of all DC3 networks, and these flashes are distorted more at larger ranges