In telecommunication, the term electronic warfare support measures (ESM) is the division of electronic warfare involving actions taken under direct control of an operational commander to search for, intercept, identify, and locate sources of radiated electromagnetic energy for the purpose of immediate threat recognition. Thus, electronic warfare support measures (ESM) provide a source of information required for immediate decisions involving electronic counter-measures (ECM), electronic counter-counter-measures (ECCM), avoidance, targeting, and other tactical employment of forces. Electronic warfare support measures data can be used to produce signals intelligence (SIGINT), both communications intelligence (COMINT) and electronics intelligence (ELINT).
Electronic Attack (formerly Electronic Countermeasures) is the division of EW involving the use of electromagnetic or directed energy to attack personnel, facilities, and equipment for the purpose of degrading, neutralizing, or destroying enemy combat capability.
Electronic Protection (formerly Electronic Counter-Countermeasures) is the division of EW involving actions taken to protect personnel, facilities, and equipment from the effects of friendly or enemy EW actions that may degrade, neutralize, or destroy friendly combat capability.
ElectronicWarfare, like most defense-related technologies, felt the pinch of declining budgets in the early 1990s, but significant progress in the modernization of EW capabilities was still made, especially in the infrared area.
Active electronicwarfare equipment generates energy, either in the form of noise to confuse an enemy's electromagnetic sensors or by generating false or time-delayed signals to deceive radio or radar equipment and their operators.
Electronicwarfare, or EW, is the use or control of electro-magnetic energy either in defense, or for the purposes of a military attack on an enemy.
Electronicwarfare (EW) is the use of the electromagnetic spectrum to deny its effective use by an adversary.
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