Ads
related to: c-max side scan sonar
Search results
Results from the WOW.Com Content Network
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.
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 sonars can be used to derive maps of seafloor topography by moving the sonar across it just above the bottom. Low frequency sonars such as GLORIA have been used for continental shelf wide surveys while high frequency sonars are used for more detailed surveys of smaller areas.
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.
[9] [10] The Mk 18 Mod 2 is equipped with side-scan sonar, a downward-looking video camera, ADCP, GPS, beam attenuation meter (BAM) to measure turbidity, and a conductivity temperature depth (CTD) sensor. [11] [12] A total of 175 REMUS 600s were delivered to customers in the United States, United Kingdom, Australia and Japan. [7]
USBL (ultra-short baseline, also known as SSBL for super short base line) is a method of underwater acoustic positioning.A USBL system consists of a transceiver, which is mounted on a pole under a ship, and a transponder or responder on the seafloor, on a towfish, or on an ROV.
Ads
related to: c-max side scan sonar