Cause of Long Spikes for Cyclotron Harmonic Waves in the Ionograms

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概要

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• 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 pules 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.

• 一般社団法人電子情報通信学会の論文
• 2000-04-25

著者

• Utsunomiya Toshio

  The Author Is With The Department Of Electrical Engineering National Defense Academy

関連論文

• Cause of Long Spikes for Cyclotron Harmonic Waves in the Ionograms

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