Teledyne RESON presented new product developments at the Hydrographic Society, including the XRANGE and Full Rate Dual Head systems introduced in 2012. In 2013, RESON introduced new multibeam systems, software features, and pipe tracking capabilities. The presentation discussed the T20 portable sonar processor and detailed new operating modes, water column visualization, automated tracking, multi-detect features, and pipe detection and tracking modules. RESON also demonstrated forward-looking systems and their basking shark research using the SeaBat 7128 system.
2. Agenda
• Teledyne Group
• Teledyne RESON Existing Product Range Overview
• New Products introduced in 2012
– XRANGE
– Full Rate Dual Head
• New Products introduced in 2013
– New Multibeam systems
– New Innovative Software Features within the SeaBat Graphical User Interface
– Pipetracking
PAGE 2
12. New Product 7160
Primo 2013 - Release of 7160, Medium Water System (3.000 m.)
SeaBat 7160
Available as a new
system or as an
upgrade to the
previous SeaBat 8160
system
Pole mounted
Deep water system
PAGE 12
16. Portable Sonar Processor
Ruggedized, marine suitable
24VDC, 110-230 VAC
Single point Cabling
SeaBat T20-P
Portable Sonar Processor under mobilization
PAGE 16
17. T20 Features
•200-400kHz wideband
•120° (140° - 165°- 400 kHz only) Swath Width
•1° x 1° / 2° x 2° (400/ 200 kHz)
•Max. 512 Beams
•Ping rate Up to 50 pings/ second
•Transducer cable length: 10, 25 or 50 m
•Depth resolution 6 mm
•Transducer compact and low weight:
– 6kg in water
– Half the size of SeaBat 7125 Receiver
PAGE 17
18. SeaBat – Portable Sonar Processor
•Robust and built for marine use
•Water resistant (IP54)
•Flexible power interface
“RESON’s Portable Sonar Processor
handles time tagging and processing
of sonar and sensor data internally,
removing the load from user supplied
laptop – ensuring accurate, tested and
reliable processing of sonar data”.
– 24V DC for ease of use on smaller vessels
– 100-230VAC for convenient office use
•Single point of connection
for survey sensors
–
–
–
–
–
Motion & heading sensor
Position (GPS)
Time
Sound Velocity (power + comms.)
Standard DB-9 style connectors
PAGE 18
23. Operating modes
Min beams
Min beams
Intermediate
Intermediate
Best coverage
Best coverage
Wide mode
Wide mode
FlexMode
FlexMode
(Optional)
(Optional)
7125
7125
200
200
140°
140°
140 beams EA
140 beams EA
140°
140°
320 beams ID
320 beams ID
140°
140°
320 beams ED
320 beams ED
165°
165°
512 beams EA
512 beams EA
140°
140°
512 beams
512 beams
7125
7125
400
400
140°
140°
240 beams EA
240 beams EA
140°
140°
512 beams ID
512 beams ID
140°
140°
512 beams ED
512 beams ED
165°
165°
512 beams EA
512 beams EA
140°
140°
512 beams
512 beams
7101
7101
150°
150°
101 beams EA
101 beams EA
150°
150°
511 beams ID
511 beams ID
150°
150°
511 beams ED
511 beams ED
8125-H
8125-H
120°
120°
256 beams EA
256 beams EA
120°
120°
512 beams ID
512 beams ID
120°
120°
512 beams ED
512 beams ED
210°
210°
511 beams EA
511 beams EA
(requires 210 deg.
(requires 210 deg.
Hardware)
Hardware)
150°
150°
511 beams
511 beams
120°
120°
511 beams
511 beams
PAGE 23
24. Operating mode - Wide mode
•
•
•
•
•
Number of beams & beam mode are fixed according to the system in use.
Wide mode uses Equi Angle only
7101
7125
7101
7125
Used for maximum swath
210°
165°
210°
165°
Quay wall or vertical structure survey
511 beams EA
512 beams EA
511 beams EA
512 beams EA
Variswath is still available
PAGE 24
25. Operating modes – NEW in FP4
• In Equidistance mode Constant Floor Spacing
– User definable Beam spacing in meters
• In Equiangle mode:
– User definable number of beams
PAGE 25
27. X-Range (Fp3)
•
•
•
•
X-Range is FM modulation
20-25% longer range
No loss of range resolution
Noise suppression effect (better Quality data)
PAGE 27
28. X-Range
• Extended range (FM)
• Provides increased range
(increasing the energy)
• Transmit a very long pulse
(typically 100-1000 times
longer
• Using long pulses degrade
resolution
• Use pulse compression to
regain resolution
• Improved Noise immunity (by
pulse compression)
PAGE 28
29. X-Range Translated to Survey
• Better noise suppression
• Better Singal discrimination
• Much higher power = more range
PAGE 29
30. Full rate Dual head (FRDH)
Old situation
FRDH
•
•
•
•
•
Using X-Range to ping simultaneously
Improvement on Dual Head ping rate
2 x 512 Beams -> Extreme amount of data
Seamless data set merged together
2 x swath width (10-12 times water depth)
PAGE 30
38. Tracker Enhancements
• Tracker in FP3
–
–
–
–
–
Automatic optimization of sonar settings
Reduced manual interaction
More user-friendly
Cleaner data sets
Reduced processing time and cost
• Tracker in FP4
– Constant swath width
– Tilted Heads & Dual Heads
– It is now possible to disable certain Tracker control settings for
advanced users who wish to remain in control of certain settings
PAGE 38
40. Multi-Detect
• Multiple detections within each beam, including the full water
column
• Capture enhanced detail from a single survey line over a
complex feature
• Ensure that full detail is captured of any object in the water
column
• Up to five detections may occur anywhere within each beam
• Note that Multi-Detect is not equivalent to multiple soundings
across a beam footprint on the seabed
PAGE 40
41. Multi-Detect – An Advanced Tool
• The surveyor controls the sensitivity of the Multi-Detect
algorithm using three controls:
• Object Size (Sensitivity): increasing this results in more
detections on smaller objects. Decreasing it results in fewer
detections and only on larger objects.
• Amplitude Sensitivity: increasing this causes more objects to
be detected
• Max Detections: this control is used to limit the number of
detections output for each beam to five
PAGE 41
51. Pipe Detection and Tracking
•
•
•
•
Optional Feature or SeaBat System FP4
Searches for the pipe with user defined settings
Steers the Flexmode or full swath towards the pipe
Shows vessel relative to pipe in helmsman view
PAGE 51
52. Pipe Detection and Tracking
•
•
•
•
Pipe diameter entered into SeaBat User Interface
Pipe position automatically determined by detection algorithm
Pipe displayed on User Interface
User interface shows 5 points detection
PAGE 52
53. Pipe Detection and Tracking - output
• Lateral position of pipe calculated
• Pipe adjacent depths calculated
• Mean seabed depths calculated
• Exports:
– Top of Pipe
– Adjacent markers
– Mean seabed markers
• Free spans may be calculated
PAGE 53
54. Pipe detection in the swath
•
•
•
•
•
Detection algorithm initially calculates top of pipe positions
BDA searches for detections in vicinity of pipe
Pipe detection algorithm automatically matches pipe position
Pipe position for next ping is initialised from previous pings
Pipe needs to be found several times at (almost) same position
in swath
• Several pipe detections creates a pipe section
PAGE 54
55. 5 points output
•Top of pipe
– Top of inserted pipe
•Points left/right from pipe
– At distance of half diameter from pipe
•Mean Seabed at user defined offset at each side from top of pipe
•Points are defined from the MB data points in the swath (not from
DTM)
•The 5 points are exported in 7k record as a 5 points string (ID
2004)
•Format available for software packages
PAGE 55
56. Pipe detection settings
Pipe detection settings are
divided in:
•Pipe detection in swath
•Pipe parts creation
•Pipe route creation
•Steering of swath
•5-points settings
PAGE 56
57. Detection of pipe in Swath settings
• Diameter of pipe
• Maximum Free Span (m)
and detection threshold
– Maximum and minimum
distance from seafloor to
detect pipe
• Statistic Threshold
– Finds standard deviation of an
area around the pipe.
– Higher values allow more
deviation
• Filters can be used to omit
data with bad quality tests
Max freespan
Detection depth
Min threshold
PAGE 57
58. Pipe steering
Steers the swath towards the
pipe.
Steers either full swath or
flex part of the swath.
Steering difference
– Swath will only steer after a
change larger than the
difference set
Steering delay
– Difference has to occur at a
number of sequential swaths
PAGE 59
59. What if?
• Two or more pipes are followed at the same time?
– More than one pipe can be followed at the same time
– Helmsman will show all pipes and select best possible position relative
to multibeam.
• Pipe changes diameter?
– The algorithm also allows changes from the diameter
• Pipe is buried under seafloor
– The MB system is not able to look beneath the seafloor.
– When the pipe shows again it will:
• Continue the pipe when the gap is small enough
• Create a new pipenumber when gap is too large
PAGE 61
60. Dual Head Pipe Detection
• Sonar offsets and head tilt entered into SeaBat User Interface
• Each FlexMode steered to pipe centre
• Lateral position from pipe is calculated and:
– Displayed to user
– Numerically
– Graphically
PAGE 62
62. Pipe Detection module Demo/ Test
• Fugro tested Pipe Detection Module in Caspian Sea using Dual
Head System
• Demo Configuration:
– Dual Head SeaBat 7125 System
– PDS2000 for Data Acquisition
• Pipeline tracked automatically in water depth varying from 10to more than 200 m
PAGE 64