SONAR - Historical Development Of Sonar, Sonar And Radar, Sonar Technology
SONAR, an acronym for Sound Navigation And Ranging, is a technique based on echolocation used for the detection of objects underwater.
SONAR, an acronym for Sound Navigation And Ranging, is a technique based on echolocation used for the detection of objects underwater.
Ancient peoples have long used tubes as non-mechanical underwater listening devices to detect and transmit sound in water. In the later nineteeth century, scientists began to explore the physical properties associated with sound transmission in water. In 1882, a Swiss physicist Daviel Colladen attempted to calculate the speed of sound in the known depths of Lake Geneva. Based upon the physics of s…
SONAR equipment is used on most ships for measuring the depth of the water. This is accomplished by sending an acoustic pulse and measuring the time for the echo, or return from the bottom. By knowing the speed of sound in the water, the depth is computed by multiplying the speed by one half of the time traveled (for a oneway trip). SONAR is also used to detect large underwater objects and to sear…
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