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Side-scan uses a sonar device that emits conical or fan-shaped pulses down toward the seafloor across a wide angle perpendicular to the path of the sensor through the water, which may be towed from a surface vessel or submarine (called a “towfish”), or mounted on the ship's hull.
Side scan sonar technology Martin Klein (born April 5, 1941) is an American engineer and inventor. He worked in the development of the side scan sonar, a tool used in maritime archaeology, deep-sea and coastal survey, marine geology, offshore engineering and military mine defense.
Resting at a depth of 5240 meters, it had been located and then identified using side scan sonar and an underwater tow sled in 1995. War-time records indicated the I-52 was bound for Germany, with a cargo including 146 gold bars in 49 metal boxes.
Figure 3: Precisely establishing the position of nuclear submarines prior to missile launches was an early application of long baseline acoustic positioning systems.
A synthetic-aperture sonar creates a synthetic array of a long length, moving preferably in a straight line, providing a theoretical along-track resolution of a few centimeters. In practice, resolution will be somewhat worse, but still much better than an equivalent sized traditional side-scan sonar.
Side-scan sonar is used to efficiently create images of large areas of the sea floor, as seen from the point of view of the transducer. Seismic sources such as sparkers and boomers are used in seismic reflection profiling, using sound pulse frequencies that effectively penetrate the solid seabed and are partially reflected by changes in ...
The side-scan sonar is useful for scientists as it is a quick and efficient way of collecting imagery of the sea floor, but it cannot measure other factors, such as depth. [11] [12] Therefore, other depth measuring sonar devices are typically accompanied with the side-scan sonar to generate a more detailed survey. [11]
In 1997, the Kongsberg Mesotech introduced the SM 2000 Multibeam Sonar, the FS 925 Forward Scanning Trawl Sonar and the MS 900D Digital Telemetry Mechanically Scanned Sonar Processor. In 1999 the PC-based MS 1000 Scanning Sonar Processor, and the 1071-series of scanning sonar heads and altimeters were added to the suite of Kongsberg Mesotech ...