METODA SONAROWA

METODA SONAROWA

Sonar is a technique that uses sound waves to detect and locate objects underwater. Side scan sonar is a specific type of sonar used to image the topography of the seafloor. Side scan sonar can produce near photographic quality images of the seabed and can map large areas of the seafloor very quickly. Side scan sonar; also referred to as side-looking sonar and side-imaging sonar; is often towed from a survey vessel and has the ability to capture hundreds of metres of seafloor on each side of the moving vessel. The near photographic quality images produced by side scan sonar along with its ability to map large areas of seafloor quickly make it an essential piece of kit for anyone requiring high definition images of the seabed.

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Side scan sonar is used extensively for many commercial, military and leisure applications. Some examples include search and rescue operations, pipeline and cable route surveys, mine detection, fish finding, wreck hunting, recovery of drowned victims, marine archaeology and geological surveys.

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SIDE SCAN SONAR HOW DOES IT WORK?

Side scan sonars transmit a narrow fan-shaped acoustic pulse (ping) perpendicular to its direction of travel. As the acoustic pulse travels outward from the side scan sonar, the seabed and other objects reflect some of the sound energy back in the direction of the sonar (known as backscatter). The travel time of the returned pulse is recorded together with its amplitude as a time series and sent to a topside console for interpretation and display. The topside console stitches together data from successive pulses, creating a long continuous image of the seafloor as the side scan sonar is towed from a survey vessel

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