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acoustic device countermeasures

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  • Long range acoustic device — The long range acoustic device (LRAD) is a crowd control and hailing device developed by American Technology Corporation.According to the manufacturer s specifications, the equipment weighs 45 pounds (20 kg) and can emit sound in a 30° beam (only …   Wikipedia

  • Electronic countermeasures — NOTOC Electronic countermeasures (ECM) are a subsection of electronic warfare which includes any sort of electrical or electronic device designed to trick or deceive radar, sonar, or other detection systems like IR (infrared) and Laser. It may be …   Wikipedia

  • Acoustic cryptanalysis — is a side channel attack which exploits sounds, audible or not, produced during a computation or input output operation by computer workstations, impact printers, or electromechanical cipher machines. History Victor Marchetti and John Marks… …   Wikipedia

  • Avenger class mine countermeasures ship — Avenger class mine countermeasures ships are a class of 14 ships constructed by the United States Navy 1987–1994. The ships are designed to clear mines from vital waterways. The ships have the hull designator MCM.BackgroundIn the early 1980s, the …   Wikipedia

  • SSTD — Disambiguation: Also used for the Space Science and Technology Department of the United Kingdom s Science and Technology Facilities Council.The British Surface Ship Torpedo Defence (SSTD) system entered into service with the British Royal Navy in …   Wikipedia

  • Incapacitant — An incapacitant is a substance or device that is used to incapacitate individuals temporarily.Uses* Riot control * Prisoner control * Crowd control * Non lethal battleExamples* chemical weapons ** tear gas ** Malodorant (stink weapon) ** CS gas… …   Wikipedia

  • Sonar — This article is about underwater sound propagation. For atmospheric sounding, see SODAR. For other uses, see Sonar (disambiguation) …   Wikipedia

  • Naval mine — Polish wz. 08/39 contact mine. The protuberances around the top of the mine, called Hertz horns, are part of the detonation mechanism …   Wikipedia

  • Geophysical MASINT — is a branch of Measurement and Signature Intelligence (MASINT) that involves phenomena transmitted through the earth (ground, water, atmosphere) and manmade structures including emitted or reflected sounds, pressure waves, vibrations, and… …   Wikipedia

  • Signals intelligence — SIGINT redirects here. For the UNIX signal, see SIGINT (POSIX). RAF Menwith Hill, a large site in the United Kingdom, part of ECHELON and the UK USA Security Agreement. Signals intelligence (often contracted to SIGINT) is intelligence gathering… …   Wikipedia

  • warning system — ▪ military technology Introduction       in military science, any method used to detect the situation or intention of an enemy so that warning can be given.       Because military tactics from time immemorial have stressed the value of surprise… …   Universalium

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