sonar system short
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Sonar (sound navigation and ranging) is a technique 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.
Sonar uses sound waves to 'see' in the water.
Sonar, short for Sound Navigation and Ranging, is helpful for exploring and mapping the ocean because sound waves travel farther in the water than do radar and light waves. ... There are two types of sonar—active and passive.
SONAR IS THE SHORT FORM FOR SOUND NAVIGATION AND RANGING. IT 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 A RECEIVER, WHICH ARE FITTED ON SHIPS OR BOATS.
THE TRANSMITTER PRODUCES AND TRANSMITS ULTRASONIC SOUND WAVES. THESE WAVES TRAVELING THROUGH WATER, STRIKE UNDERWATER OBJECTS AND GET REFLECTED BY THEM. THE REFLECTED WAVES ARE RECEIVED BY THE RECEIVER ON THE SHIP.
THE RECEIVER CONVERTS THE ULTRASONIC SOUND INTO ELECTRICAL SIGNALS AND THESE SIGNALS ARE PROPERLY INTERPRETED. THE TIME DIFFERENCE BETWEEN TRANSMISSION AMD RECEPTION IS NOTED. THIS TIME AND THE VELOCITY OF SOUND IN WATER GIVE THE DISTANCE FROM THE SHIP, OF THE OBJECT WHICH REFLECTS THE WAVES.
SONAR IS USED TO DETERMINE THE DEPTH OF THE SEA. SONAR IS ALSO USED TO SEARCH UNDERWATER HILLS, VALLEYS, SUBMARINES, ICEBERGS, SUNKEN SHIPS, ETC.