| 翻訳と辞書 |
| Ground Wave Emergency Network ： ウィキペディア英語版 |
AN/URC-117 Ground Wave Emergency Network
The Ground Wave Emergency Network (GWEN)〔(Defense Technical Information Center: "Joint Publication 1-02" )〕 was a command and control communications system intended for use by the United States government to facilitate military communications before, during and after a nuclear war. Specifically, GWEN was constructed to survive the effects of a high-altitude nuclear explosion generated electromagnetic pulse (HEMP) to ensure that the United States President or his survivors could issue a launch order to strategic nuclear bombers.〔(Commission on Life Science: "Assessment of the Possible Health Effects of Ground Wave Emergency Network", 1993 )〕〔Associated Press: "U.S. to Complete Emergency Radio Network", The New York Times, 12 September 1988〕
==Overview==
GWEN was part of the Strategic Modernization Program designed to upgrade the nation's strategic communication system, thereby strengthening the value of nuclear deterrence. The GWEN communication system, established in the late 1980s, was designed to transmit critical Emergency Action Messages (EAM) to United States nuclear forces. EMP can produce a sudden power surge over a widespread area, that could overload unprotected electronic equipment and render it inoperable. In addition, EMP would interfere with radio transmissions that use the ionosphere for propagation. GWEN would use a ground-hugging wave for propagation, being unaffected by the EMP.〔
The network was conceived as an array of approximately 300 radio transceivers distributed across the continental USA which operated in the Low frequency (LF) radio band. Later revised for 126 towers, plans again changed to include 56 radio towers linking 38 terminals; it was later expanded to 96 towers linking 49 terminals. Final network towers numbered 58.〔
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「AN/URC-117 Ground Wave Emergency Network」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.
|
|