Echolocation

The echolocation consists in sending its S to various Fréquence S and recovering them. Duration taken so that the wave returns, and the nature of the waves returned among all those emitted, allow when one knows the characteristics of the propagating medium to locate and to a lesser extent to identify the desired elements.

Animal echolocation

This system is used by the bats (more particularly the Microchiroptères), the Dauphin S or the Orque S, to avoid the obstacles, to locate their preys or to communicate. According to the animals, the beach of frequency can be extremely wide: between 250 and 220.000 hertz for the dolphins.

The precision of the use of this technique at the dolphins exceeds by far the most modern means of the beginning of the 21e century. It makes it possible to find its preys through the mud or in mediums with null visibility (that it is because of mud, the dust or the lack of light).

Artificial echolocation

Several projects aim at reproducing the system of echolocation used by the bats. Thus the " is created; Beat-Club-footed " , within project CIRCE of the Information Society Technologies (STI).

See too

Reference

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