Question

what is sonar??????? ​

Answer 1

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a system for the detection of objects under water by emitting sound pulses and detecting or measuring their return after being reflected.

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Answer 2

solution :-

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• Sonar to navigate, communicate with or detect objects on or under the surface of the water, such as other vessels.
• Two types of technology share the name "sonar": passive sonar is essentially listening for the sound made by vessels; active sonar is emitting pulses of sounds and listening for echoes. Sonar may be used as a means of acoustic location and of measurement of the echo characteristics of "targets" in the water.