Question

Explain the working of sonar?

Answer 1

The word ‘SONAR’ stands for ‘Sound Navigation and Ranging’.

Principle of Sonar: It uses echoes in to determine the sea-depth and locating the presence of objects underwater.

Working of Sonar:

1. It consists of a transmitter and a detector and is installed in a ship or a boat.
2. The transmitter in SONAR produces and transmits powerful ultrasonic waves.
3. The ultrasonic waves travel through the water and after striking the target the beam is reflected from the seabed and is received by an underwater detector (mounted on the ship).
4. The detector then converts the waves into electrical signals which are properly interpreted.
5. The time interval between transmission and reception of the signal is also noted.