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sonar
[soh-nahr]
noun
a method for detecting and locating objects submerged in water by echolocation.
the apparatus used in sonar.
sonar
/ ˈəʊɑː /
noun
a communication and position-finding device used in underwater navigation and target detection using echolocation
sonar
Short for sound navigation and ranging. A method of detecting, locating, and determining the speed of objects through the use of reflected sound waves. A sound signal is produced, and the time it takes for the signal to reach an object and for its echo to return is used to calculate the object's distance. The Doppler effect can also be used to determine the object's relative velocity. Electronic sonar systems are used for submarine navigation and for detecting schools of fish. Some mammals, especially bats, use biological sonar to navigate and detect prey in dark conditions, commonly called echolocation.
The equipment or physiology used in doing this.
See also Doppler effect lidar radar
Word History and Origins
Origin of sonar1
Word History and Origins
Origin of sonar1
Example Sentences
Divers scoured the water and deployed sonar scanners to search for Daniel until nightfall.
A typical task would be to drop sonar buoys in the sea, used to listen for submarines.
And in November 2023, Canberra accused Beijing's navy of using sonar pulses in international waters off Japan, resulting in Australian divers suffering injuries.
Keeley said safety professionals have reviewed the wharf “from beginning to end, from wall to wall, side to side” and with ocean sonar equipment to ensure it was “sound and safe” for visitors and merchants.
On Monday, the Sheriff’s Office announced that all efforts to find the boys beneath the surface using divers and sonar technology had been exhausted.
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