What is principle of SONAR
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Posted by Pranav Karve 7 years, 1 month ago
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Gaurav Seth 7 years, 1 month ago
SONAR- The acronym SONAR stands for Sound Navigation and Ranging.
Sonar is a device that uses ultrasonic waves to measure the distance, direction and speed of underwater objects.
Principle: It uses the phenomenon of echoes in determining the sea-depth and locating the presence of under-water objects.
Working:
i) A strong beam of ultrasonic waves is sent from a transmitter mounted on the ship.
ii) The beam is reflected from the seabed and is received by an under-water detector which is also mounted on the ship.
iii) The time interval between transmission and reception of the ultrasonic signal is noted.
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