Development of a Deep-Water Topological Survey System Using a Laser Scanner with a GPS.

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  • 水中レーザー・ＧＰＳを用いた大水深測深システムの研究開発
  • スイチュウ レーザー GPS オ モチイタ ダイスイシン ソクシン システム

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We have developed an underwater survey system using a scanning Laser sensor and a GPS (Global Positioning System) sensor instrment that is capable of providing high resolution data in low -visibility water. A laser is used as a light source which highly directional pulsed beams with high intensity.<BR>Topography is surveyed by detecting the propagation time of the pulsed laser beams which are reflected at the bottom of the sea. The laser system is installed in a ship and the beams are introduced to a ROV (Remotely-Operated-Vehicle) through an optical fiber.<BR>The extremely high propagation velocity of the beam in the water compared with that of an ultrasonic beam and the scanning survey system enable us to measure a large area within a short time.

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