SeaBeam 3012 - Elac-Nautik

SeaBeam 3012
Full Ocean Depth Multibeam System
12 kHz | 11,000 m Full Ocean Depth Performance | 31,000 m Swath Coverage | Swept Beam TM

DISCOVER THE UNKNOWN
SeaBeam 3012
Full Ocean Depth Multibeam System
SeaBeam 3012 is the latest generation bathymetric multibeam system from L-3 ELAC Nautik.
This advanced system features the patented, revolutionary transmission technique called Swept
Beam, which compensates fully for vessel pitch, roll and yaw motion.
Performance
SeaBeam 3012 is a high performance deep sea echo
sounder, providing excellent bathymetric, bottom
backscatter and side scan data due to its innovative
sonar processing. The system operates at 12 kHz in
water depths ranging from 50 m to 11,000 m, at survey
speeds of up to 12 knots. SeaBeam 3012 produces
bathymetric data that exceed the requirements of the
International Standards Organization (IHO) for depths
greater than 100 meters.
Swept Beam Transmission Technique
The main difference between the Swept Beam and a
classical sector scan (separately steered beams) is that
the resulting swath footprints of the swept beams for a
series of pings are evenly parallel spaced lines.
(a)
(b)
Vessel track without stabilization (a), with sector scan (b) and using Swept Beam (c)
High Density Mode
SeaBeam 3012 has 301 beams (maximum at equiangular mode). The swath can
be decreased. The number of beams will be constant even if the swath width will
be decreased until a specifi c angle is reached.
(c)
Instead the sector scan produces a couple of hyperbolic
curves with overlapping areas in the across-ship direction.
These hyperbolic curves and overlapping areas
produce some discontinuities which may generate artifacts
in the post-processing.
Key Features
Up to 11,000 m Full Ocean Depth Performance
Up to 31,000 m Swath Coverage
Patented Swept Beam Technology
Multi-Ping Mode
Modular Design for Different Beam Widths
Hull mounted hydrophone frame (fl ush installation)
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SeaBeam 3012
System Overview
Modular Design for Customized Beam Width Solutions
Transmitter and Receiver Control Units
The transmitter control unit supplies the drive signals to the entire projector array.
Each output is separately controlled for power level, phase and frequency. This
faciliates programmable shading and steering, as well as transmit beam stabilization
using Swept Beam.
The receiver control unit controls the overall ping cycle. It contains the receiver
circuits for the hydrophones as well as the signal processor for beam forming,
bottom detection and data reduction. The control units are interfaced to the operator
station via Ethernet.
Transducer Array
The transducer array incorporates a projector and
a hydrophone array in a mills cross confi guration. The
12 kHz projector array has an along track beam width of
1° or 2°. It consists of up to 25 identical modules. The
projectors use Tonpilz resonators.
The hydrophone array has an athwart ship beam width
of 1° or 2° normal to the array. It consists of up to 15
identical modules. The hydrophones use ceramic elements
which have broadband performance to provide
excellent phase uniformity across the array and multifrequency
capability.
Operator Station
The operator station, a PC of latest technology, provides
a graphical user interface on high resolution TFT monitors
for controlling the system using L-3 ELAC Nautik's
HydroStar ONLINE software. It communicates with the
sonar electronics via Ethernet both for control and reception
of sonar data and performs the sound velocity
correction, heave compensation, navigation merging
and data record construction. A variety of real-time data
displays are available for quality control.
Water Column Imaging Workstation
SeaBeam 3012 is WCI ready, no extra installation is needed.
The Water Column Imaging (WCI) functionality is
utilized via an additional PC workstation that logs WCI
data and displays real-time images of backscatter from
the water column and sea fl oor, both below and to the
sides of the vessel. The WCI workstation connects to the
SeaBeam 3012 multibeam system via Ethernet, and receives
data for each ping from the multibeam.
SeaBeam 3012 multibeam system
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Specifications and Technical Data
Seabeam 3012 at a Glance
Technical Data
Operating frequency
min. depth
max. depth
Along-ship beam width
(-3 dB points)
Across-ship beam width
(-3 dB points)
Pulse length
Pulse length modes
12 kHz band
50 m below transducers
11,000 m (full ocean depth)
1°or 2°
(other beam widths available)
1° or 2°
(other beam widths available)
3 ms - 20ms
max. swath coverage sector > 140°
max. swath coverage
Swath coverage modes
max. number of soundings
Beam spacing
Depth accuracy (sonar sensor)
Physical Specifications
Hydrophone array *
Manual and automatic
approx. 31,000 m (depending on
own noise of the ship and sea state)
Manual and automatic
918 (multi-ping)
Equidistance or equiangular
In accordance with IHO for depths
greater than 100 meters
Interfaces
Power
Height (mm) Width (mm) Depth (mm) Weight (kg)
1° 222 892 7,756 2,136
2° 222 952 4,316 1,200
Projector array *
1° 276 7,740 1,056 3,880
2° 276 4,200 1,116 2,000
Hydrophone junction box 410 600 192 21
Projector junction box 395 640 130 20
Receiver control unit 1,751 600 1,003 337
Transmitter control unit 2,152 606 841 350
Operator station 177 (4 HE) 483 (19” Rack) 505 14
*Dimensions may change due to special installation requirements. Please ask for dimensional drawings.
Stabilization
Roll ± 10°
Pitch ± 7°
Yaw ± 5°
115 V / 60 Hz or 230 V / 50 Hz
single phase
Motion RS232 / RS 422
Heading RS232 / RS 422
Position RS232 / RS 422
Surface sound velocity RS232 / RS 422
Sound velocity profile RS232 / RS 422
L-3 Communications ELAC Nautik GmbH | Neufeldtstrasse 10 | 24118 Kiel | Germany | Tel. +49 (0)431-883 0 | Fax +49 (0)431-883 496
elac.marketing@L-3com.com | www.elac-nautik.de | Design changes and errors reserved. Rev. B 18/03/2013
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