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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(2) 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(3) sonar is an acronym for sound navigation ranging(4) asdic is an acronym for anti-submarine detection investigation committee

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(1) the fishing nets are detectable by dolphin sonar(2) The animal's sensitive sonar is capable of picking up information about the shape of distant objects, and it was trained to respond in some distinctive way to this piece of information.(3) They believe that by being in the water with the animals and feeling their sonar they too are receiving a u251cu00f6u251cu00e7u251cu2510healingu251cu00f6u251cu00e7u251cu00fb.(4) The knowledge the researchers gain about bat sonar is tested out on dolphins and applied to human sonar systems.(5) Hearing the unusual ping, the animals might turn on their echolocators - their sonar - and then they can sense the net.(6) a weak sonar signal(7) For instance, he said, its active and passive sonar systems are aging, thus shortening the range of its monitoring.(8) And evidence that sonar kills whales goes way beyond coincidence.(9) Out in the Atlantic, vast Japanese factory ships work nonstop, using modern sonar detection to spot the tuna shoals they sweep the ocean clean of fish.(10) While the animals lack sonar , they do posses superb directional underwater hearing and the ability to see in near-darkness.(11) Now, video footage and sonar data proves conclusively that the wreck is not Centaur.(12) The SUNS system can determine positions underwater by the use of small buoys which broadcast the position and time references by sonar signals.(13) It just seemed to me that it would be more interesting to have things like submarine sonars and old grandfather clocks and lines from famous movies and bird songs and things like that.(14) It is equipped with a ham radio set, personal computer, global positioning system, two sonars , autopilot and wind wane which steers the boat depending on the direction of the wind.(15) Autosub will be using sonars to study the seabed.(16) They will be equipped with the latest survey systems, including multi-beam echo sounders and modern side-scan sonars , as well as the most advanced navigation and communications systems.