Propagation Characteristic of Wideband Electromagnetic Wave in the Ionosphere

• Taniguchi Takumi

  Department of Communications Engineering, Osaka University

• Hirata Akimasa

  Department of Computer Science and Engineering, Nagoya Institute of Technology

• Morimoto Takeshi

  Department of Communications Engineering, Osaka University

• Kawasaki Zen

  Department of Communications Engineering, Osaka University

抄録

This paper analyzes propagation of wideband electromagnetic (EM) wave in the ionosphere. The influence of total electron contents (TEC) of the ionosphere on the propagation of EM wave is investigated numerically. Our attention is paid to very high frequency (VHF) band, which is dominant frequency band of EM waves emitted from lightning discharges. A one-dimensional model of the ionosphere is considered for simplicity. The ionosphere is treated as an anisotropic and dispersive medium. Particularly, the altitude distribution of electron density is taken into consideration. Variation of pulse width and difference in the arrival time between each frequency component due to the dispersion in the ionosphere are revealed. For our numerical investigation, group delay of the EM wave is found to be dependent on the altitude distribution of electron density, especially when the peak electron density is the order of 10¹²m^-3 or more.

収録刊行物

• 電気学会論文誌．　Ａ

  電気学会論文誌．　Ａ 126 (11), 1173-1176, 2006

  一般社団法人 電気学会

キーワード

• wideband EM wave
• TEC
• electron density

詳細情報

• CRID: 1390001204592867584
• NII論文ID: 10018317995
• NII書誌ID: AN10136312
• DOI: 10.1541/ieejfms.126.1173
• ISSN: 13475533
• ISSN: 03854205
• NDL書誌ID: 8561965
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8561965
• Web Site: http://www.jstage.jst.go.jp/article/ieejfms/126/11/126_11_1173/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可