Terme de Glossaire

Sonar

Sonar (the English acronym of SOund Navigation And Ranging) is a detection device based on the reflection of sound waves in marine environments. This system is analogous to Radar, which for its part is based on the reflection of radio waves in the air. The sonar emits ultrasound pulses and receives the waves reflected back with the help of a sensitive detector. It thus enables the 'drawing' of a map of the sea's depths or the detection of the presence of an object in the water, a submarine for example.

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