Estimation of channel characteristics of narrow bipolar events based on the transmission-line model
Estimation of channel characteristics of narrow bipolar events based on the transmission-line model
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基于传输线模型的窄双极事件信道特性估计
DOI：
10.1029/2009jd012021
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发表时间：
2010-10
影响因子：
4.4
通讯作者：
Tao, Shanchang
中科院分区：
文献类型：
--
作者：
Lv, Fanchao;Zhu, Baoyou;Ma, Ming;Zhou, Helin;Tao, Shanchang
窄双极事件(NBE)是一种独特的星际闪电放电，它与最强的射频辐射有关，并产生典型的窄双极辐射场波形。在传输线模型的基础上，我们引入了一种直接技术来测量电流前沿从远距离辐射场脉冲沿信道传播所需的时间，然后通过将该时间乘以假设的传播速度来估计NBE的信道长度。我们的方法包括在NBE的窄双极波形的初始半周期内进行积分。积分结果与初始峰值幅度的比值很好地逼近了电流前沿沿通道传播所花费的时间，即使电流幅度沿传播通道遭受严重衰减。该方法适用于所有产生窄双极辐射场波形的NBE。此外，如果远场辐射场和近场静电场的测量都是已知的，则可以将本文的方法与Eack(2004)的方法相结合来获得NBE的沟道长度。
Narrow bipolar event (NBE) is a distinct class of intracloud lightning discharge, which is associated with the strongest radio frequency emissions and produces typical narrow bipolar radiation field waveforms. On the basis of the transmission‐line model, we introduce a direct technique to measure the time taken by the current front to propagate along the channel from distant radiation field pulses; the channel length of the NBE can then be estimated by multiplying this time by an assumed propagation speed. Our method involves integrating over the initial half cycle of narrow bipolar waveform of the NBE. The ratio of the integral result to the initial peak amplitude makes a good approximation to the time taken by the current front to travel along the channel, even though the current amplitude suffers heavy attenuation along the propagating channel. This method can be applied to all NBEs which produce narrow bipolar radiation field waveforms. Besides, if both the far radiation field and the near‐electrostatic field measurements were available, one could combine the method here and that of Eack (2004) to obtain the channel length of the NBE.
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影响因子：
--
作者：
T. Hamlin;T. E. Light;X. Shao;K. Eack;J. Harlin
通讯作者：
T. Hamlin;T. E. Light;X. Shao;K. Eack;J. Harlin
影响因子：
--
作者：
D. Vine;J. Willett
通讯作者：
D. Vine;J. Willett
DOI：
--
发表时间：
2001-12
期刊：
--
影响因子：
--
作者：
D. Suszcynsky;S. Davis;A. Jacobson;M. Heavner;M. Pongratz
通讯作者：
D. Suszcynsky;S. Davis;A. Jacobson;M. Heavner;M. Pongratz
影响因子：
--
作者：
H. Tierney;R. Roussel-Dupre;E. Symbalisty;W. Beasley
通讯作者：
H. Tierney;R. Roussel-Dupre;E. Symbalisty;W. Beasley
影响因子：
5.2
作者：
K. Eack
通讯作者：
K. Eack