- The definition of sonar is a system that sends out sound waves and measures how long it takes for them to be reflected and returned as a way to detect the depth of water or to find objects under water.
An example of sonar is a system wherein you send out sound waves and see how long it takes to bounce them back in order to try to find out how deep an area is in the Atlantic Ocean.
Origin of sonarso(und) n(avigation) a(nd) r(anging)
- A system using transmitted and reflected underwater sound waves to detect and locate submerged objects or measure the distance to the floor of a body of water.
- An apparatus, as one in a submarine, using sonar.
Origin of sonarso(und) na(vigation and) r(anging).
- (nautical) echolocation
- (nautical) A device that uses hydrophones (in the same manner as radar) to locate objects underwater.
From SONAR, acronym from sound navigation and ranging.
sonar - Computer Definition
A sonic device used for the detection and location of underwater objects. Active sonar emits sound waves and measures the characteristics of the waves reflected from objects. Passive sonar simply measures the characteristics of sound waves emitted by objects. Sonar determines the range and position of such objects through the use of the Doppler effect, radial component of velocity measurement, and triangulation. See also ping and radar.