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Deep-sea underwater cameras may take either video or still images with high-resolution digital cameras. There are a huge range of underwater cameras for every purpose but they all have several things in common. |
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A similar seafloor mapping technique to multibeam sonar is the use of airborne laser bathymetry, or Light Detection and Ranging (lidar), which use low-flying aircraft to scan pulsed laser beams across the seafloor and generate a swath of depth soundings. |
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Fledermaus is a powerful, interactive 4D (space and time) data visualisation software developed by Interactive Visualization Systems (IVS3D). Fledermaus software is used for a variety of ocean mapping applications, such as multibeam depth editing, environmental surveys, undersea mining, seabed geology research, cable laying and dredge planning. |
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Singlebeam echosounders have been used routinely for many years to collect depth data from the world’s oceans. This acoustic technique relies on a vessel-mounted transducer to generate a single acoustic pulse directed towards the seabed underneath the vessel.
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Sidescan sonar uses sound energy reflected off the seabed to reveal the detailed texture or roughness of the seafloor. Unlike echosounders which only measure depth, a sidescan sonar records an image of the seabed by measuring the strength of returned echoes. |
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