acoustic detector

См. также в других словарях:

• Bat detector — The term bat detector is usually used to describe a device used to detect the presence of bats by converting their echolocation ultrasound signals to audible frequencies as they are emitted by the bats. There are other types of detector which… …   Wikipedia

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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

• Ice detector — An ice detector is an optical transducer probe available for aviation purposes. It has no moving parts, is completely solid and its principle of operation is entirely optical. Intrusive to the airstream and hermetically sealed, it uses un… …   Wikipedia

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• geophone — /jee euh fohn /, n. a device that is placed on or in the ground and used to detect seismic waves. [1915 20; GEO + PHONE] * * * ▪ instrument       trade name for an acoustic detector that responds to ground vibrations generated by seismic waves.… …   Universalium

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• 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