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Sonar (sound navigation and ranging or sonic navigation and ranging) [2] is a technique that uses sound propagation (usually underwater, as in submarine navigation ...
Sónar is a festival dedicated to music, creativity and technology, founded in Barcelona in 1994 by Ricard Robles, Enric Palau, and Sergi Caballero.The festival has been divided into two parts since its inception: Sónar by Day and Sónar by Night, with a three-day congress, Sónar+D dedicated to Creativity, Technology and Business running concurrently since 2013.
Sonar systems are generally used underwater for range finding and detection. Active sonar emits an acoustic signal, or pulse of sound, into the water. The sound bounces off the target object and returns an echo to the sonar transducer. Unlike active sonar, passive sonar does not emit its own signal, which is an advantage for military vessels.
Tony Romeo and his Deep Sea Vision team – which captured a sonar image of an aircraft-shaped object in the Pacific Ocean during a three-month expedition to find Earhart’s Lockheed 10-E Electra ...
Asdic was the British version of sonar developed at the end of World War I based on the work of French physicist Paul Langevin and Russian engineer M. Constantin Chilowsky. . The system was developed as a means to detect and locate submarines by their reflection of sound wa
AN/SQS-26 was a United States Navy surface ship, bow mounted, low frequency, active/passive sonar developed by the Naval Underwater Sound Laboratory [1] and built by General Electric and the EDO Corporation. At one point, it was installed on 87 [2] US Navy warships from the 1960s to the 1990s and may still be in use on ships transferred to ...
Synthetic-aperture sonar (SAS) is a form of sonar in which sophisticated post-processing of sonar data is used in ways closely analogous to synthetic-aperture radar. Synthetic-aperture sonars combine a number of acoustic pings to form an image with much higher along-track resolution than conventional sonars.
Similarly, the littoral combat ship was supposed to have a towed sonar probe to find submarines, but the ship's engines were so loud it drowned out the sonar signals. That technology, too, was ...