VLF lightning location by time of group arrival (TOGA) at multiple sites

被引：273

作者：

Dowden, RL ^{[1
]}

Brundell, JB ^{[1
]}

Rodger, CJ ^{[1
]}

机构：

[1] LF EM Res Ltd, Dunedin, New Zealand

来源：

JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS | 2002年 / 64卷 / 07期

关键词：

lightning location; time of arrival; time of group arrival; arrival time difference; Earth-ionosphere waveguide; omega navigation;

D O I：

10.1016/S1364-6826(02)00085-8

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

Lightning is located by using the time of group arrival (TOGA) of the VLF (3-30 kHz) radiation from a lightning stroke. The dispersed waveform ("sferic") of the lightning impulse is processed at each receiving site. The TOGA is determined relative to GPS at each site from the progression of phase versus frequency using the whole wave train. Unlike current VLF methods which require transmission of the whole wave train from each site to a central processing site, the TOGA method requires transmission of a single number (the TOGA) for lightning location calculation. The stable propagation and low attenuation of VLF waves in the Earth-ionosphere waveguide (EIWG) allows a wide spacing of receiver sites of several thousand kilometer so that a truly global location service could be provided using only similar to10 receiver sites. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：817 / 830

页数：14

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