The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
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The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Les longues pointes ont souvent été enregistrées à des multiples de la fréquence du cyclotron électronique dans les ionogrammes des sondeurs de surface observés aux basses latitudes. Jusqu’à présent, il n’y a pas eu d’explication suffisante sur la cause physique de l’apparition de ce long pic. Ici, en interprétant ce phénomène comme la réception de l'onde harmonique cyclotron piégée, certaines analyses de la longueur du pic sont effectuées non seulement du point de vue de la propriété de balayage du spectre de fréquence de l'impulsion transmise, mais également de celui de la relation de position mutuelle entre le chemin de propagation et l'orbite du sondeur. La cause de la formation d'un pic unique et une méthode de calcul graphique pour le pic long sont proposées respectivement. Ainsi, la cause et la structure fine de la longue pointe constituée de pointes superposées sont clarifiées.
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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},}
Copier
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 -