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FANBEAM SR SHORT RANGE LASER RADAR SYSTEM

Fanbeam SR Short Range Laser Radar System

Author(s)                 Measurement Devices Ltd.
Publisher Measurement Devices Ltd.
Date 2001
Pages 75
Format pdf
Size 1.5 Mb

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   MDL's Fanbeam©SR is a laser radar system; it was designed for repetitive, high accuracy tracking and positioning of marine vessels as well as semi-static and static anchored structures. This system is intended to be used to control/assist automatic docking of a vessel next to a platform or jetty or any other vessel. Traditionally, three sensors are employed onboard a vessel involved in dynamic positioning operations. MDL's Fanbeam®SR compliments differential GPS (DGPS) and can assume a primary role when differential signals are lost or become ineffective. The above stated system is also used to position seismic vessels gun array floats as the vessel surveys the latest oilfield prospects. The basic system consists of a laser scanning unit which is mounted on a motorised yoke that able to rotate 360° at up to 50° per second and can measure to a range of 1,000m to within an accuracy of ±10cm using a vertical 18° fan of pulsed light produced by a multiple element semiconductor laser diode in combination with special optics. Pulses reflected from a retro-reflector mounted on a rig or a vessels gun array, for example, is timed and multiplied by the speed of light to give distance. At the time of the received return the electro optical encoder is read to give bearing.

Category: SERVICE AND OPERATION MANUALS - NAVIGATION EQUIPMENT & DP | Views: 1334 |
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