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  1. F300 宇宙地球環境研究所
  2. F300b 紀要
  3. 空電研究所報告
  4. 8(1-2)

空電波形の周波数分析研究(第1報)

http://hdl.handle.net/2237/21749
http://hdl.handle.net/2237/21749
7216593d-51bd-4a29-8a99-0d6d33c17ff0
名前 / ファイル ライセンス アクション
bulria_8_1-2_19.pdf bulria_8_1-2_19.pdf (1.1 MB)
Item type 紀要論文 / Departmental Bulletin Paper(1)
公開日 2015-04-28
タイトル
タイトル 空電波形の周波数分析研究(第1報)
言語 ja
その他のタイトル
その他のタイトル RESEARCHES IN THE FREQUENCY ANALYSES OF WAVE-FORMS OF ATMOSPHERICS-I.
言語 en
著者 佐尾, 和夫

× 佐尾, 和夫

WEKO 57581

ja 佐尾, 和夫

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SAO, Kazuo

× SAO, Kazuo

WEKO 57582

en SAO, Kazuo

Search repository
アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
抄録
内容記述 In order to illustrate the wave-forms of atmospherics with the knowledge of pulses radiated from the origin and theories of propagation of V.L.F. waves, investigations of the frequency spectra obtained with the aid of frequency analyses were proposed. In this paper the author analysed a number of smooth type wave-forms of atmospherics and tried to investigate the characteristics of frequency spactra. The relation between a wave-form and its frequency spectrum is represented by an expression of the form. (The equation is omitted) where G(t) is the wave-form, S (ω) is the amplitude-frequency spectrum and φ(ω) is the phasefrequency spectrum. However, because of the difficulties of the computation of Fourier transform expressions, the author prepared an analog computer. In the consideration of wave-forms of received atmospherics there are two problems to be considered; first the discharge current wave-froms of lightning strokes, secondly attenuation characteristics of propagation paths. When we consider a lightning discharge as a source of an atmospheric, and assume that a vertical cloud-to-ground lightning stroke is a vertical aerial, we know well that the received electric field is proportional to the current of the aerial. Therefore some curves of various types of discharge currents reported by Norinder and Dahle were selected, and their frequency spectra were obtained. Furthermore, frequency spectra of received wave-forms of atmospherics are described concering the following points. a) Frequency spectra of the received wave-forms of atmospherics radiated from the similar region at about the same time. b) Differences between frequency spectra derived from wave-forms with long duration and those with short duration. c) Frequency spectra derived from the complicated wave-forms. But it is not our purpose to clarify here the characteristics of propagation paths employing the frequency spectra of received atmospherics with precise sferics fixes; the author, therefore, has as yet no information as to what is involved in the propagation of V.L.F. waves.
言語 en
内容記述タイプ Abstract
出版者
言語 ja
出版者 名古屋大学空電研究所
言語
言語 jpn
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ departmental bulletin paper
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
ISSN(print)
収録物識別子タイプ PISSN
収録物識別子 0465-7756
書誌情報 ja : 空電研究所報告

巻 8, 号 1-2, p. 19-25, 発行日 1958-03-20
著者版フラグ
値 publisher
URI
識別子 http://hdl.handle.net/2237/21749
識別子タイプ HDL
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