Mitigating VHF Lightning Source Retrieval Errors
Mitigating VHF Lightning Source Retrieval Errors
复制标题
减少 VHF 闪电源检索错误
DOI：
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
P. Bitzer
中科院分区：
文献类型：
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作者：
W. Koshak;D. Mach;P. Bitzer
摘要：从闪电映射阵列（LMA）网络到达时间（TOA）测量中推断甚高频（VHF）闪电源发射的位置和发生时间的问题进行了仔细研究，以澄清检索误差的原因，并确定如何最好地减轻这些误差。对于这一逆问题，以往文献缺乏对相关正问题的全面讨论。因此，本研究对正演问题进行了分析，以便更好地阐明为什么反演误差会随着震源水平距离的增加和/或震源高度的降低而增加。通过执行精心设计的蒙特卡罗反演模拟来获得进一步的见解，该模拟提供了特定的检索误差图，这反过来又导致了减少检索错误的明确建议。基于所有的数值结果，建议采用以下策略来减少检索错误（在可能的情况下，并且不妨碍视线）：…
AbstractThe problem of inferring the location and time of occurrence of a very high frequency (VHF) lightning source emission from Lightning Mapping Array (LMA) network time-of-arrival (TOA) measurements is closely examined in order to clarify the cause of retrieval errors and to determine how best to mitigate these errors. With regard to this inverse problem, the previous literature lacks a comprehensive discussion of the associated forward problem. Hence, the forward problem is analyzed in this study to better clarify why retrieval errors increase with increasing source horizontal range and/or decreasing source altitude. Further insight is obtained by performing carefully designed Monte Carlo inversion simulations that provide specific retrieval error plots, which in turn lead to clear recommendations for mitigating retrieval errors. Based on all of the numerical results, the following strategies are recommended for mitigating retrieval errors (when possible, and without obstructing the line of sight): ...