Hawk Eye II System
Blom Environmental and Coastal Surveys’ Hawk Eye II system has been developed from a pedigree of LiDAR systems.
The Hawk Eye II system requires only one person to operate and manage the data acquisition.
FLASH - An airborne LiDAR hydrography system developed by SAAB Aircraft and the Swedish Defence Research Agency in 1985. FLASH was designed for use in helicopters and used both an infrared and green laser for depth imaging and object detection; its primary function was submarine counter measures.
Hawk Eye I - developed by SAAB and the Swedish Defence community and optimised for depth sounding. It was operated in Sweden and Indonesia for IHO Order 1 hydrographic surveys. Hawk Eye I with its integral inertial reference system and GPS system, was installed in a helicopter.
Hawk Eye II has built of the experience and advances of its predecessors to become a world leading airborne LiDAR bathymetric / topographic system.
Its key features include:
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Flying speed:
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120kts (typical)
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Flying height:
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200-400m nominal
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Swath width:
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nominally 100m at 300m altitude
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Laser frequencies:
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bathymetric 532nm
topographic 1064nm
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Pulse repetition rate:
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bathymetric LiDAR, 4kHz effective, 1kHz nominal
topographic LiDAR, 64kHz effective, 8kHz nominal
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Laser point density
(patented multiplex solution):
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bathymetry, nominally 1.45m
topography, nominally 0.4 x 0.2m
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Coverage rates:
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typically 25km² per hour
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Sorties:
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typically 4 hours duration (100km2) up to 2 sorties per day
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Data processing:
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bathymetry, AHAB Hydrographic Studio and CARIS HIPS;
topography, TerraScan
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