Portable Sub-bottom Profiling System

EdgeTech has introduced the new 3100 Sub-Bottom Profiling System, a portable solution for sub-bottom imaging. The system uses Full-Spectrum (‘chirp’) pulses to create high-definition image slices of the sub-bottom structure. It can be used in rivers, lakes, ponds, and in the ocean. The 3100 System comes with a choice of two tow vehicles, to meet the penetration and resolution requirements of a survey. The SB-216S tow vehicle has a frequency range from 2-16kHz and the SB-424 tow vehicle from 4-24kHz. Both vehicles use specially designed transmitters with low Q-wide band characteristics best suited for ‘chirp’ transmissions. Two multi-element line-array hydrophones... (read more)
2005-10-15 12:00:00

Major Sub-bottom Profiling Survey

MMT (Sweden) has successfully completed a survey which includes the capture of parametric sub-bottom profile (SBP) data with a Kongsberg TOPAS PS 40 system. The system was hull-mounted on MMT's survey vessel Triad. The survey covered an area of 6,000km2 in the Baltic Sea and obtained an extensive amount of data. The SBP data was collected during a hydrographic survey for the Swedish Maritime Administration (SMA) where high-resolution bathymetric data will be used to update sea charts. Additionally will the SBP data from TOPAS PS 40 give the client a detailed picture of the sediment layers of the surveyed area.... (read more)
2013-04-24 11:34:10

General Acoustics Sub-Bottom Profiler

General Acoustics has presented the new SUBPRO 1210 Sub-Bottom Profiler the first time in public last Autumn in Aberdeen. At this occasion, a little survey for the Chief Surveyor of the port, Eddie Aitken, was performed. After the survey he got a new image of ‘his’ harbour. Rock layers were detected where he did not expect them (under 8m of sand) and made him curious for the next SUBPRO 1210 survey in Aberdeen. The system operates with 12 KHz and a power up to 10 KW. Shallow water surveying starting at 1.5 meters. The SUBPRO 1210 Sub-Bottom Profiler will be... (read more)
2007-01-18 09:41:25

PINGER Sub-Bottom Profiling Demo

Knudsen Engineering have put their new 15kHz Pinger sub-bottom profiling system through its paces on Lake Champlain Vermont with the support of Middlebury College on their research vessel R/V Baldwin. During the demonstration the Pinger was operated in water as shallow as 1.5 metres. Shallow water has always been a problem for conventional SBP's because of transmission pulse ringing. Data processing was performed with Chesapeake Technologies SonarWiz 5 software.     The Pinger features chirp transmission and a large aperture receiver using the latest PVDF technology that provides higher directivity while remaining lightweight. The Pinger SBP's receive array also has... (read more)
2011-07-21 09:43:30

iXblue’s Sub-bottom Profiler Solution

Inland Survey
The need for lake & river surveys constantly increases as human activity expands in these areas. While navigation remains a main focus, nowadays other applications such as hydraulic construction inspection, biomass and resource control, pollution tracking or historical sedimentology represent a significant market share. This article has been brought to you by iXblue. Operational and technical challenges in this new type of inland survey often relate to difficulty of access to survey sites, significant constraints on equipment size and weight, energy, as well as the need for acquiring very high-resolution data with a limited crew. As iXblue strives to develop... (read more)
2017-10-10 09:54:39

Technology for New Sub-Bottom Imager

Sensor Technology recently designed and delivered a prototype batch of advanced array hydrophones to PanGeo Subsea for deployment on its newly developed Sub-Bottom Imager (SBI). SensorTech designed the custom hydrophones to meet specifications provided by PanGeo Subsea. Five individual array hydrophones are mounted to an ROV skid in a foldable configuration, spanning 3.3 metres when fully extended and folding to only 1.8m in width for ROV deployment and retrieval. The PanGeo Subsea SBI delivers high-resolution volumetric images 4m wide and 5m deep and real time data processing using proprietary software. "The hydrophones represent one of the most ambitious designs to... (read more)
2010-01-25 01:17:04

Product Survey: Sub-bottom Profiling Systems

It is likely that you will find sub-bottom profiling equipment onboard most of the survey vessels involved in offshore investigations. Whereas the echo sounder is designed for top-layer investigations, with high-resolution and seismic equipment for deep penetration, sub-bottom profiling equipment covers the area in between and provides a glance into the first ten to hundreds of metres of the sea bottom. On top of this, the sub-bottom profiler is a thankful piece of equipment when it comes to enjoying onboard discussions between hydrographer and geophysicist regarding required penetration, frequency used versus data resolution, definition of the top of the seabed... (read more)
2008-01-01 01:00:00

Lasts decades’ evolution in sub-bottom profiling

Most sub-bottom profilers of the 60s, 70s and 80s were only designed to generate cross-sectional images of seabed sediment layering and other sub-bottom features. The data were degraded by system limitations such as narrow bandwidth, nonlinear and un-calibrated electronics, low signal-to-noise ratio of filtered data, source ringing, poor pulse repeatability and poor temporal and spatial resolution.<P> Frequency Modulated pulses (taken from RF Radar Technology) addressed these limitations. A quantitative sub-bottom profiler was introduced in the mid 1990s so that the reflection seismogram has the wide dynamic range required for signal processing procedures in sediment classification methods. These procedures, which initially... (read more)
2008-08-27 12:00:00

L3 Klein CHIRP Sub-bottom Profiler

L-3 Klein has launched a CHIRP Sub Bottom Profiler (SBP) attachment for the 3000 Model Side-scan Sonar. The older SBP was a single transducer 3.5kHz "pinger" and delivered satisfactory performance for a lightweight SBP, but lacked penetration and resolution. The new SBP has a two transmit transducers and linear hydrophone Mills Cross configuration for optimum "sea bottom footprint", as well as a CHIRP transmit pulse.   Deliveries of the new K-CHIRP Model 3310 Sub Bottom Profiler are based on feedback from the demos; this SBP will raise the performance bar for Sub Bottom Profilers at a competitive price. (read more)
2007-08-20 04:04:15
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