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Sonar is a way of communicating, navigating, and detecting objects by using sound propagation. For the remainder of this lesson, we will focus on underwater sonar, which is used by submarines and some aquatic animals to perform the previously mentioned tasks.
Itâs called âmultibeamâ because unlike the first single-beam sonars, which sent out one signal or ping, multibeam sonar sends out a whole group of pings at once. Multibeam sonar can cover a larger area than a single beam can.