Cause of Long Spikes for Cyclotron Harmonic Waves in the Ionograms
Summary :
The long spikes have been often recorded at the multiples of the electron cyclotron frequency in the ionograms of the topside sounders observed in low latitudes. There has not been sufficient explanation for the physical cause for occourrence of the long spike so far. Here, by interpreting this phenomenon as receiving the trapped cyclotron harmonic wave, some analyses for the length of spike are done not only from the viewpoint of the sweeping property of the frequency spectrum of the transmitted pulse but also from that of the mutual positional relation between the propagation path and the orbit of the sounder. The cause of forming a single spike and a graphical calculation method for the long spike are proposed, respectively. Thus, the cause and the fine structure of long spike consisting of superposed spikes are clarified.
- Publication
- IEICE TRANSACTIONS on Communications Vol.E83-B No.4 pp.838-849
- Publication Date
- 2000/04/25
- Publicized
- Online ISSN
- DOI
- Type of Manuscript
- PAPER
- Category
- Electromagnetic Compatibility(EMC)
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Toshio UTSUNOMIYA, "Cause of Long Spikes for Cyclotron Harmonic Waves in the Ionograms" in IEICE TRANSACTIONS on Communications,
vol. E83-B, no. 4, pp. 838-849, April 2000, doi: .
Abstract: The long spikes have been often recorded at the multiples of the electron cyclotron frequency in the ionograms of the topside sounders observed in low latitudes. There has not been sufficient explanation for the physical cause for occourrence of the long spike so far. Here, by interpreting this phenomenon as receiving the trapped cyclotron harmonic wave, some analyses for the length of spike are done not only from the viewpoint of the sweeping property of the frequency spectrum of the transmitted pulse but also from that of the mutual positional relation between the propagation path and the orbit of the sounder. The cause of forming a single spike and a graphical calculation method for the long spike are proposed, respectively. Thus, the cause and the fine structure of long spike consisting of superposed spikes are clarified.
URL: https://global.ieice.org/en_transactions/communications/10.1587/e83-b_4_838/_p
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@ARTICLE{e83-b_4_838,
author={Toshio UTSUNOMIYA, },
journal={IEICE TRANSACTIONS on Communications},
title={Cause of Long Spikes for Cyclotron Harmonic Waves in the Ionograms},
year={2000},
volume={E83-B},
number={4},
pages={838-849},
abstract={The long spikes have been often recorded at the multiples of the electron cyclotron frequency in the ionograms of the topside sounders observed in low latitudes. There has not been sufficient explanation for the physical cause for occourrence of the long spike so far. Here, by interpreting this phenomenon as receiving the trapped cyclotron harmonic wave, some analyses for the length of spike are done not only from the viewpoint of the sweeping property of the frequency spectrum of the transmitted pulse but also from that of the mutual positional relation between the propagation path and the orbit of the sounder. The cause of forming a single spike and a graphical calculation method for the long spike are proposed, respectively. Thus, the cause and the fine structure of long spike consisting of superposed spikes are clarified.},
keywords={},
doi={},
ISSN={},
month={April},}
Copy
TY - JOUR
TI - Cause of Long Spikes for Cyclotron Harmonic Waves in the Ionograms
T2 - IEICE TRANSACTIONS on Communications
SP - 838
EP - 849
AU - Toshio UTSUNOMIYA
PY - 2000
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E83-B
IS - 4
JA - IEICE TRANSACTIONS on Communications
Y1 - April 2000
AB - The long spikes have been often recorded at the multiples of the electron cyclotron frequency in the ionograms of the topside sounders observed in low latitudes. There has not been sufficient explanation for the physical cause for occourrence of the long spike so far. Here, by interpreting this phenomenon as receiving the trapped cyclotron harmonic wave, some analyses for the length of spike are done not only from the viewpoint of the sweeping property of the frequency spectrum of the transmitted pulse but also from that of the mutual positional relation between the propagation path and the orbit of the sounder. The cause of forming a single spike and a graphical calculation method for the long spike are proposed, respectively. Thus, the cause and the fine structure of long spike consisting of superposed spikes are clarified.
ER -
English
