Vvmer GrabBee III Bedienungsanleitung Seite 5

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SORHEA Installation Manual
19/12/11
SORHEA – 1, rue du Dauphiné – 69120 Vaulx-en-Velin
Tél +33 4 78 03 06 10 - Fax +33 4 78 68 24 61 www.sorhea.fr
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1. THE SYSTEM
1.1. Optical system and visibility
All our equipments use Laser technology with 905nm wavelength (infrared). Our devices are purely optical
systems with important electronic processing and softwares.
Figure 1 : Visible light wavelength
Every optical systems are sensitive to visibility variations. Thanks to the laser power and a complex
algorithm, only severe meteorological conditions can make the detection range decreasing about 20%
maximum (fog, snow, heavy rain).
For sea approach applications, the swell is not a problem and the detection of small crafts, with low
speed, can be made. However, the foam detection can not be avoided.
Figure 2 : Ajaccio harbour: cruise ship surveillance with 2 ALS.
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