asdic
n. device used for underwater detection of submarines | ||||
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ASDIC definition was found in categories: Language, Idioms & Slang(1) Government(1) Science & Technology(1) Encyclopedia(1)
ASDIC Definition from Language, Idioms & Slang Dictionaries & Glossaries
| WordNet 2.0 |
asdic
Noun
1. a measuring instrument that sends out an acoustic pulse in water and measures distances in terms of the time for the echo of the pulse to return; sonar is an acronym for sound navigation ranging; asdic is an acronym for anti-submarine detection investigation committee
(synonym) sonar, echo sounder
(hypernym) measuring instrument, measuring system, measuring device
(part-holonym) submarine, pigboat, sub, U-boat
(part-meronym) pinger
Noun
1. a measuring instrument that sends out an acoustic pulse in water and measures distances in terms of the time for the echo of the pulse to return; sonar is an acronym for sound navigation ranging; asdic is an acronym for anti-submarine detection investigation committee
(synonym) sonar, echo sounder
(hypernym) measuring instrument, measuring system, measuring device
(part-holonym) submarine, pigboat, sub, U-boat
(part-meronym) pinger
ASDIC Definition from Government Dictionaries & Glossaries
| International Relations and Security Acronyms |
ASDIC
Anti-Submarine Detection Investigation Committee
Anti-Submarine Detection Investigation Committee
ASDIC Definition from Science & Technology Dictionaries & Glossaries
| RAF |
ASDIC
, (Allied Submarine Investigation Committee), a ship-borne sonic detection system first developed in 1917.
, (Allied Submarine Investigation Committee), a ship-borne sonic detection system first developed in 1917.
ASDIC Definition from Encyclopedia Dictionaries & Glossaries
| Wikipedia English - The Free Encyclopedia |
Sonar
SONAR (SOund NAvigation and R anging) — or sonar — is a technique that uses sound propagation under water (primarily) to navigate, communicate or to detect other vessels. There are two kinds of sonar — active and passive. Sonar may be used as a means of acoustic location.
Acoustic location in air was used before radar. Sonar may also be used in air for robot navigation while SODAR (an upward looking in-air sonar) is used for atmospheric investigations.
The term sonar is also used for the equipment used to generate and receive the sound. The frequencies used in sonar systems vary from infrasonic to ultrasonic.
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