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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Ionospheric absorption ： ウィキペディア英語版 Ionospheric absorption Ionospheric absorption (or ISAB) is the scientific name for absorption occurring as a result of the interaction between various types of electromagnetic waves and the free electrons in the ionosphere, which can interfere with radio transmissions. ==Description== Ionosphere absorption is of critical importance when radio networks, telecommunication systems or interlinked radio systems are being planned, particularly when trying to determine propagation conditions.〔Walker, J.K. ; Bhatnagar, V.P. Ionospheric absorption, typical ionization, conductivity, and possible synoptic heating parameters in the upper atmosphere. Geological Survey of Canada.http://www.osti.gov/energycitations/product.biblio.jsp?osti_id=6068491〕 The ionosphere can be described as an area of the atmosphere in which radio waves on shortwave bands are refracted or reflected back to earth. As a result of this reflection, which is often key in the long-distance propagation of radio waves,some of the shortwave signal strength is decreased. In this regard, ISAB is the primary limiting factor in radio propagation. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ionospheric absorption」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.