sound countermeasures
1Electronic 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 …
2USS Norton Sound (AVM-1) — USS Norton Sound (AV 11/AVM 1) was originally built as a Sclass|Currituck|seaplane tender by Los Angeles Shipbuilding and Drydock Company in San Pedro, California. She was named for Norton Sound, a large inlet in West Alaska, between the Seward… …
3Electronic counter-countermeasures — (ECCM) describes a variety of practices which attempt to reduce or eliminate the effect of Electronic countermeasures (ECM) on electronic sensors aboard vehicles, ships and aircraft and weapons such as missiles. ECCM is also known as Electronic… …
4Sonar — This article is about underwater sound propagation. For atmospheric sounding, see SODAR. For other uses, see Sonar (disambiguation) …
5Geophysical 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… …
6Europe, history of — Introduction history of European peoples and cultures from prehistoric times to the present. Europe is a more ambiguous term than most geographic expressions. Its etymology is doubtful, as is the physical extent of the area it designates.… …
7Anti-submarine warfare — (ASW or in older form A/S) is a branch of naval warfare that uses surface warships, aircraft, space craft or other submarines to find, track and then damage or destroy enemy submarines. Like many forms of warfare, successful anti submarine… …
8Signals 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… …
9Naval mine — Polish wz. 08/39 contact mine. The protuberances around the top of the mine, called Hertz horns, are part of the detonation mechanism …
10naval warfare — Military operations conducted on, under, or over the sea and waged against other seagoing vessels or targets on land or in the air. The earliest naval attacks were raids by the armed men of a tribe or town using fishing boats or merchant ships.… …
