Wideband Radio Wave Observations of Lightning Discharge by Maido-1 Satellite

Hiroshi KIKUCHI  Takeshi MORIMOTO  Tomoo USHIO  Zen KAWASAKI  

Publication
IEICE TRANSACTIONS on Communications   Vol.E93-B   No.8   pp.2226-2227
Publication Date: 2010/08/01
Online ISSN: 1745-1345
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Sensing
Keyword: 
satellite observation,  lightning discharge,  wideband EM wave,  wave propagation,  

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Summary: 
Maido-1 satellite was launched on 23 January 2009. The satellite carries the radio-frequency payload, Broadband Measurement of Waveform for VHF Lightning Impulses (VHF sensor), for research on lightning discharges. The final goal of our research is to locate sources of impulsive VHF radiation from lightning discharges and constantly monitor lightning activity from space. Maido-1 satellite has the aim of proving the functions of the sensor in space and to study the radio propagation characteristics of the ionosphere. Through the operation/observation for 5 months, more than 10,000 VHF signals have been recorded. The locations where VHF signals are detected and the examples of the received waveforms are presented in this paper. We discuss the regional dependency of the received signals.