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Narrow bipolar pulses and associated microwave radiation

Narrow Bipolar Pulses (NBPs) is a special type of intra-cloud lightning discharge activities and was observed with both polarities: negative (NNBP) and positive (NPBP). It is known with other names also such as Narrow Bipolar Events (NBEs), energetic intracloud events, and Compact Intracloud Dischar...

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Main Authors:	Ahmad, M. R., Mohd. Esa, M. R., Cooray, V.
Format:	Conference or Workshop Item
Published:	2013
Subjects:	TK Electrical engineering. Electronics Nuclear engineering
Online Access:	http://eprints.utm.my/id/eprint/51191/ https://www.researchgate.net/publication/258997634_Narrow_Bipolar_Pulses_and_Associated_Microwave_Radiation
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id	my.utm.51191
record_format	eprints
spelling	my.utm.511912017-08-20T04:13:42Z http://eprints.utm.my/id/eprint/51191/ Narrow bipolar pulses and associated microwave radiation Ahmad, M. R. Mohd. Esa, M. R. Cooray, V. TK Electrical engineering. Electronics Nuclear engineering Narrow Bipolar Pulses (NBPs) is a special type of intra-cloud lightning discharge activities and was observed with both polarities: negative (NNBP) and positive (NPBP). It is known with other names also such as Narrow Bipolar Events (NBEs), energetic intracloud events, and Compact Intracloud Discharges (CIDs). NBP signatures have been measured by using various methods such as electric field change recording systems, HF-VHF direct measurement systems (filter-detector receiver), and satellite-based systems. To the best of our knowledge, there are no attempts have been made to measure NBP signatures at microwave region so far. In this paper, observations of microwave radiation from thunderstorms have been made during the northeastern monsoon season of 2012 in Malaysia. Fast electric field change recording and broadband microwave receiver systems have captured simultaneous records of NBPs electric field change and microwave radiation, respectively. Strong noise-like burst of microwave radiation pulses associated with NBP events were detected. The total duration of the microwave bursts of the pulses is in the range between 2 and 8μs for both NNBPs and NPBPs. More than 70% of the recorded radiation bursts arrived a few microseconds before the onset of the corresponding NBPs. The analyzed temporal characteristics of the microwave radiation bursts for both NNBPs and NPBPs are similar and indistinctive. In contrast, the analyzed NNBPs and NPBPs temporal characteristics are distinctive to some extent. 2013 Conference or Workshop Item PeerReviewed Ahmad, M. R. and Mohd. Esa, M. R. and Cooray, V. (2013) Narrow bipolar pulses and associated microwave radiation. In: Progress In Electromagnetics Research Symposium. https://www.researchgate.net/publication/258997634_Narrow_Bipolar_Pulses_and_Associated_Microwave_Radiation
institution	Universiti Teknologi Malaysia
building	UTM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Teknologi Malaysia
content_source	UTM Institutional Repository
url_provider	http://eprints.utm.my/
topic	TK Electrical engineering. Electronics Nuclear engineering
spellingShingle	TK Electrical engineering. Electronics Nuclear engineering Ahmad, M. R. Mohd. Esa, M. R. Cooray, V. Narrow bipolar pulses and associated microwave radiation
description	Narrow Bipolar Pulses (NBPs) is a special type of intra-cloud lightning discharge activities and was observed with both polarities: negative (NNBP) and positive (NPBP). It is known with other names also such as Narrow Bipolar Events (NBEs), energetic intracloud events, and Compact Intracloud Discharges (CIDs). NBP signatures have been measured by using various methods such as electric field change recording systems, HF-VHF direct measurement systems (filter-detector receiver), and satellite-based systems. To the best of our knowledge, there are no attempts have been made to measure NBP signatures at microwave region so far. In this paper, observations of microwave radiation from thunderstorms have been made during the northeastern monsoon season of 2012 in Malaysia. Fast electric field change recording and broadband microwave receiver systems have captured simultaneous records of NBPs electric field change and microwave radiation, respectively. Strong noise-like burst of microwave radiation pulses associated with NBP events were detected. The total duration of the microwave bursts of the pulses is in the range between 2 and 8μs for both NNBPs and NPBPs. More than 70% of the recorded radiation bursts arrived a few microseconds before the onset of the corresponding NBPs. The analyzed temporal characteristics of the microwave radiation bursts for both NNBPs and NPBPs are similar and indistinctive. In contrast, the analyzed NNBPs and NPBPs temporal characteristics are distinctive to some extent.
format	Conference or Workshop Item
author	Ahmad, M. R. Mohd. Esa, M. R. Cooray, V.
author_facet	Ahmad, M. R. Mohd. Esa, M. R. Cooray, V.
author_sort	Ahmad, M. R.
title	Narrow bipolar pulses and associated microwave radiation
title_short	Narrow bipolar pulses and associated microwave radiation
title_full	Narrow bipolar pulses and associated microwave radiation
title_fullStr	Narrow bipolar pulses and associated microwave radiation
title_full_unstemmed	Narrow bipolar pulses and associated microwave radiation
title_sort	narrow bipolar pulses and associated microwave radiation
publishDate	2013
url	http://eprints.utm.my/id/eprint/51191/ https://www.researchgate.net/publication/258997634_Narrow_Bipolar_Pulses_and_Associated_Microwave_Radiation
_version_	1643652967440580608
score	13.211869

Narrow bipolar pulses and associated microwave radiation

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