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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.
The company needed someone to monitor a new kind of technology called side-scan sonar, which uses ultrasonic sound waves to create images of items on an ocean or lake bottom. "I volunteered," he said.
An important general rule for side-scan sonar searches, regardless of what search pattern is used, is to orient the long dimension of the search area so that it is approximately parallel with the depth contours, which minimizes the need to make changes of the towfish altitude to maintain a reasonably consistent altitude (height above the bottom ...
Given that side scan sonar, with its across-track fan-shaped swath of insonification, had successfully exploited the cross-track variation in echo amplitudes, to achieve high quality images of the seabed, it seemed a natural progression that the fan-shaped across-track pattern of insonification associated with the new monotone higher frequency ...
The AN/AQS-20 naval mine hunting sonar systems will be employed for deeper mine threats. The "Q-20", as it is commonly called, is an underwater towed body containing a high resolution, side-looking, multi-beam sonar system used for minehunting along the ocean bottom. This rapidly deployable system provides real-time sonar images to operators to ...
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 ...
Tony Romeo and his Deep Sea Vision team – which captured a sonar image of an aircraft-shaped object in the Pacific Ocean during a three-month expedition to find Earhart’s Lockheed 10-E Electra ...
Side Scan Sonar systems produce images by forming angular “beams”. Beam width is determined by length of the sonar array, narrower beams resolve finer detail. Longer arrays with narrower beams provide finer spatial resolution.
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