SONAR, an acronym for SOund Navigation And Ranging, is a technology used to navigate objects (generally vessels in underwater) using the sound waves. In Marines, transducers in SONAR emit sound pulses into water. If these pulses strike with an object in the path and returns back, the returned pulses are received by the transducer and analyzed to determine the distance and orientation of the object. There are two types of SONAR – Active SONAR and Passive SONAR.
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