Wavelet analysis of chaotic pulse trains prior to subsequent return strokes in Malaysia
This paper presents a wavelet transformation of chaotic pulse trains (CPTs) prior to negative subsequent return strokes in Malaysia. A total of 593 recorded waveforms were examined. Even though several hundred waveforms were identified as containing CPTs, only 47 waveforms with CPTs preceding subseq...
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Institute of Electrical and Electronics Engineers Inc.
2016
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my.utm.729282017-11-21T03:28:08Z http://eprints.utm.my/id/eprint/72928/ Wavelet analysis of chaotic pulse trains prior to subsequent return strokes in Malaysia Wooi, C. L. Abdul-Malek, Z. Ahmad, N. A. Esa, M. R. M. Zakaria, Z. Ahmad, M. R. TK Electrical engineering. Electronics Nuclear engineering This paper presents a wavelet transformation of chaotic pulse trains (CPTs) prior to negative subsequent return strokes in Malaysia. A total of 593 recorded waveforms were examined. Even though several hundred waveforms were identified as containing CPTs, only 47 waveforms with CPTs preceding subsequent return stroke were selected for analysis. 19 samples are classified as CPTs associated with dart or dart-stepped leader (Type 1 CPTs) with spectral and spread regions average frequency range of 34.8-154.3 kHz and 56.2-81.4 kHz respectively. 28 samples are classified as chaotic pulse trains alone (Type 2 CPTs) with spectral and spread regions average frequency range of 24.6-121 kHz and 40.3-62 kHz, respectively. The Type 1 CPTs tends to radiate at a higher frequency range compared to Type 2 CPTs. The maximum power radiated by the largest pulse in Type 1 CPTs is more than six times larger than that for the Type 2 CPTs. In addition, the Type 1 CPTs have larger electric field variations, higher frequency, and higher power radiated spectrum compared to Type 2 CPTs. The reported radiated energy can be further compared with other lightning activities to give a better insight on the in-cloud breakdown processes prior to subsequent return strokes. Institute of Electrical and Electronics Engineers Inc. 2016 Conference or Workshop Item PeerReviewed Wooi, C. L. and Abdul-Malek, Z. and Ahmad, N. A. and Esa, M. R. M. and Zakaria, Z. and Ahmad, M. R. (2016) Wavelet analysis of chaotic pulse trains prior to subsequent return strokes in Malaysia. In: 33rd International Conference on Lightning Protection, ICLP 2016, 25 September 2016 through 30 September 2016, Lisboa; Portugal. https://www.scopus.com/inward/record.uri?eid=2-s2.0-85011029495&doi=10.1109%2fICLP.2016.7791496&partnerID=40&md5=1ca1a545c4faf7c76f6c6a6c383fff04 |
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TK Electrical engineering. Electronics Nuclear engineering Wooi, C. L. Abdul-Malek, Z. Ahmad, N. A. Esa, M. R. M. Zakaria, Z. Ahmad, M. R. Wavelet analysis of chaotic pulse trains prior to subsequent return strokes in Malaysia |
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This paper presents a wavelet transformation of chaotic pulse trains (CPTs) prior to negative subsequent return strokes in Malaysia. A total of 593 recorded waveforms were examined. Even though several hundred waveforms were identified as containing CPTs, only 47 waveforms with CPTs preceding subsequent return stroke were selected for analysis. 19 samples are classified as CPTs associated with dart or dart-stepped leader (Type 1 CPTs) with spectral and spread regions average frequency range of 34.8-154.3 kHz and 56.2-81.4 kHz respectively. 28 samples are classified as chaotic pulse trains alone (Type 2 CPTs) with spectral and spread regions average frequency range of 24.6-121 kHz and 40.3-62 kHz, respectively. The Type 1 CPTs tends to radiate at a higher frequency range compared to Type 2 CPTs. The maximum power radiated by the largest pulse in Type 1 CPTs is more than six times larger than that for the Type 2 CPTs. In addition, the Type 1 CPTs have larger electric field variations, higher frequency, and higher power radiated spectrum compared to Type 2 CPTs. The reported radiated energy can be further compared with other lightning activities to give a better insight on the in-cloud breakdown processes prior to subsequent return strokes. |
format |
Conference or Workshop Item |
author |
Wooi, C. L. Abdul-Malek, Z. Ahmad, N. A. Esa, M. R. M. Zakaria, Z. Ahmad, M. R. |
author_facet |
Wooi, C. L. Abdul-Malek, Z. Ahmad, N. A. Esa, M. R. M. Zakaria, Z. Ahmad, M. R. |
author_sort |
Wooi, C. L. |
title |
Wavelet analysis of chaotic pulse trains prior to subsequent return strokes in Malaysia |
title_short |
Wavelet analysis of chaotic pulse trains prior to subsequent return strokes in Malaysia |
title_full |
Wavelet analysis of chaotic pulse trains prior to subsequent return strokes in Malaysia |
title_fullStr |
Wavelet analysis of chaotic pulse trains prior to subsequent return strokes in Malaysia |
title_full_unstemmed |
Wavelet analysis of chaotic pulse trains prior to subsequent return strokes in Malaysia |
title_sort |
wavelet analysis of chaotic pulse trains prior to subsequent return strokes in malaysia |
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Institute of Electrical and Electronics Engineers Inc. |
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2016 |
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http://eprints.utm.my/id/eprint/72928/ https://www.scopus.com/inward/record.uri?eid=2-s2.0-85011029495&doi=10.1109%2fICLP.2016.7791496&partnerID=40&md5=1ca1a545c4faf7c76f6c6a6c383fff04 |
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13.160551 |