Question

what does sonarstand for ?name its two main parts. list two use of sonar technique

Answer 1

Sonar (originally an acronym for SOund Navigation And Ranging) is atechnique that uses sound propagation (usually underwater, as in submarine navigation) to navigate, communicate with or detect objects on or under the surface of the water, such as other vessels

Answer 2

SONAR : SOund Navigation And Ranging.

SONAR system is used to determine the direction, distance and speed of an underwater object with the help of ultrasonic sound waves .

SONAR has a transmitter and receiver which are fitted on ship or boat .

SONAR is also used to determine the depth of the sea and to search underwater, Hills, Valley, submarine, Iceberg, sunken ships etc.

The transmitter produces a transmits ultrasonic sound waves .These waves travel through water strike underwater objects and get reflected by them .The reflected waves are received by the receiver on the ship .Receiver converts ultrasonic sound into electrical signals and these signals are properly interpreted . The time difference between transmission and reception is noted . This time and the velocity of sound in water give the distance from the shape of the object which reflects the Waves .