Sunday, February 26, 2017

Underwater mobile dynamic mapping

On July 15th, 1942, the German U-boat 576 was sunk off the coast of North Carolina.
Today, you can see an amazing 3D image of U-576 in the form of processed point cloud.
This was created using a revolutionary new dynamic underwater mobile scanning technique using lasers.
Using Sonardyne’s LBL acoustic positioning technology, coupled with SPRINT INS, Syrinx Doppler navigation and 2G Robotics’ ULS-500 laser mounted to a manned submersible, NOAA were able to fly over the sunken U-boat whilst simultaneously taking continuous laser scans.
DOF Subsea, Sonardyne, 2G Robotics, and Seatronics successfully demonstrated a new underwater surveying technique that could significantly shorten the time needed to map underwater structures and offshore sites.
The new technique uses a 3D laser scanner fitted to an ROV to create highly detailed, point cloud images of subsea assets and environments.

By combining the 3D laser data with precise underwater acoustic and inertial navigation information, it is now possible to generate centimetre resolution engineering models from which accurate measurements can be instantaneously and repeatably captured.

2G Robotics collaborated with the National Oceanic and Atmospheric Administration (NOAA) at the Thunder Bay National Marine Sanctuary to document America’s maritime heritage.
2G Robotics and NOAA, with the assistance of Offshore Analysis & Research Solutions (OARS), used 2G Robotics’ underwater laser scanning technology to create 3D models of some of America’s most nationally significant shipwrecks.
(other video / video)

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