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Electronic warfare (EW) is any action involving the use of the electromagnetic spectrum or directed energy to control the spectrum, attack an enemy, or impede enemy assaults via the spectrum. The purpose of electronic warfare is to deny the opponent the advantage of, and ensure friendly unimpeded access to, the EM spectrum. EW can be applied from air, sea, land, and space by manned and unmanned systems, and can target humans, communications, radar, or other assets.〔 〕 ==The electromagnetic environment== Military operations are executed in an information environment increasingly complicated by the electromagnetic (EM) spectrum. The electromagnetic spectrum portion of the information environment is referred to as the electromagnetic environment (EME). The recognized need for military forces to have unimpeded access to and use of the electromagnetic environment creates vulnerabilities and opportunities for electronic warfare (EW) in support of military operations.〔 Within the information operations construct, EW is an element of information warfare; more specifically, it is an element of offensive and defensive counterinformation.〔 〕 NATO has a different and arguably more encompassing and comprehensive approach to EW. A Military Committee conceptual document from 2007 (MCM_0142 Nov 2007 Military Committee Transformation Concept for Future NATO Electronic Warfare) recognised the EME as an operational manoeuvre space and warfighting environment/domain. In NATO, EW is considered to be warfare in the EME. NATO has adopted simplified language which parallel those used in the other warfighting environments like maritime, land and air/space. For example, Electronic Attack is offensive use of EM energy. ED is electronic defence and ES electronic surveillance. The use of the traditional NATO EW measures (ECM, EPM and ESM) has been retained as they contribute to and support EA, ED and ES. Besides EW, other EM operations include ISTAR and SIGINT. Subsequently NATO has issued EW Policy and Doctrine and is addressing the other NATO defence lines of development. 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「electronic warfare」の詳細全文を読む スポンサード リンク
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