echolocation

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Related to Echo location: Human echolocation

ech·o·lo·ca·tion

(ek'ō-lō-kā'shŭn),
Term applied to the method by which bats direct their flight and avoid solid objects. The creatures emit high-pitched cries that, though inaudible to human ears, are heard by the bats themselves as reflected sounds (echoes) from objects in their path.

echolocation

the means by which objects are identified through echoes returned from very high frequency sound emissions. Bats use such a system to avoid objects in flight and to locate prey, as do toothed whales and dolphins.
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He explained that echo location, or flashsonar as he terms it, will eventually enable Jamie to detect buildings from a distance of more than 100 metres.
The tiny creatures have echo location calls which only reach 20 metres and never venture far from home.
Cross has developed several technologies in the areas of sonar and echo location used for underwater survey and object location.
Alan Stuart, of the European Cetacean Bycatch Campaign, said: "The greatest proportion of feeding inshore by dolphins and porpoises is by them actually putting their nose down in the water and bumping along the bottom, so that their echo location is pointing down.
These tiny furry flyers are capable of amazing aero-bat-ics with their flight being far more controlled than even a bird's and their clever use of echo location helps them to hunt and find their way in the dark.