In military telecommunications, electronic support or electronic support measures gather intelligence through passive "listening" to electromagnetic radiations of military interest. They are an aspect
RAF Menwith Hill, a large ECHELON site in the United Kingdom, and part of the UK-USA Security Agreement.
French ship Dupuy de Lôme, specialised in SIGINT
Electronic countermeasure
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An electronic countermeasure is an electrical or electronic device designed to trick or deceive radar, sonar, or other detection systems, like infrared or lasers. It may be used offensively and defens
Electronic warfare support measures
…longer-term operational planning. Thus, electronic support provides a source of information required for decisions involving electronic protection (EP), electronic attack (EA), avoidance, targeting, and other tactical employment of forces. Electronic support data can be used to produce signals intelligence (SIGINT…
Inspecting an AN/ALQ-184 Electronic Attack Pod.
Simulated radar screen in US Navy training exercise showing simulated jamming (triangular white area lower right)
Drone counter measures (1st Squadron, 3rd Cavalry Regiment of the US Army drill with the Battelle DroneDefender, 30 October 2018, Iraq.)
German Tornado ECR