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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.
This paper gives a short introduction to underwater sound and the principle of sonar. In addition, the paper describes the use of sonar in three di erent applications: sh nding; imaging of the sea oor and mapping of the sea oor. I. INTRODUCTION SONAR is the acronym for SOund Navigation And Ranging. Sonar techology is similar to other technologies