Question

What is Sonar? Give a long answer.

Answer 1

I think this is helpful for you

Answer 2

Long note on SONAR

SONAR stands for Sound Navigation and Ranging .

Look in the attachment to understand the concept of it.

Notes on SONAR

• In SONAR , ultrasonic vibrations are sent in all directions from a ship.
• These waves travel through the sea .
• They are reflected by obstacles such as iceberg,sunken ships,submarines,etc.
• Upon reflection these waves come back to the ship within a certain time
• This time can be used for calculating the distance of the obstacle because we already know the speed of sound waves in water.
• Let speed be V and time is t. then d=Vt / 2
• This process of finding the obstacles by emiting sound is called SONAR
• In SONAR only ultrasonic vibrations are sent because of their large wavelength,less scattering ability and so on.
• When SONAR is used to calculate the depth of water it is called echo depth ranging .

Hope it helps you:-)

[ I had to copy the image from google caz I am using computer so I cant click my hand drawn picture from here ]

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