Me70 Bathymetric Module

  • Delegates from the French Research Institute for Exploration of the Sea (Ifremer) visited the Kongsberg Maritime Subsea headquarters in Horten, Norway late December 2013 for the Factory Acceptance Test of its second Simrad ME70 scientific multibeam echosounder. Ifremer acquired the multibeam echo sounder – the Simrad ME70 delivered as part of the mid-life refit of the L’Europe Research Vessel – to strengthen its work in the Mediterranean Sea. Sea trials on the refit vessel are planned for March 2014.
    The delivery completes the already installed Simrad EK60 scientific single beam echosounder system to create a standardized package that combines quantitative single beam and multibeam systems for vessels that carry out biological surveys. Ifremer has also chosen the ME70 bathymetric module, enabling the ME70 to perform seabed mapping according to international standards while at the same time doing ecosystem surveys of the water column.
    The Simrad ME70 has a built in calibration functionality in the software, made possible because the ME70 utilizes split beams in all beams. A calibration sphere with known target strength is used to calibrate the entire system, allowing the user to obtain absolute backscatter values from ecosystem components such as plankton, fish or bottom habitat. Calibrated backscatter data are also relevant for bottom classification, as backscatter levels can be compared on the same scale.
    Also the Simrad ME70 offers its fully populated element array in both alongship and athwartship direction. A total of 800 individual elements in the transducer are used to form up to 45 split beams spread out in a fan in the athwartship direction. As individual beams are formed in both transmission and reception, two way side lobe suppression give side lobe levels lower than -35 dB. Coupled with Frequency Rotated Directional Transmission (FRDT), where operating frequency is shifted between the beams to avoid interleakage, the ME70 is designed to allow the user to measure weak targets close to strong ones, which is essential when your goal is to map the entire marine ecosystem.
    “The ME70 has added another dimension to our biological surveys on board the R/V Thalassa as it addresses some of the physical shortcomings of quantitative single beam echo sounders such as low resolution and sampling volume. It has been many years since we started using the ME70 on Thalassa, but we have now come to a point where we standardize the combination of quantitative multibeam and multifrequency single beam systems on board our vessels that carry out biological survey and research,” adds Laurent Berger, fishery acoustician at Ifremer.
     

    (As published in the May 2014 edition of Marine Technology Reporter - http://www.marinetechnologynews.com/Magazine)

  • ChesapeakeTechnology announced an advancement to its SonarWiz software with the addition of post-processing for multi-beam echo sounder and interferometric bathymetry systems. SonarWiz now offers data processing for both multi-beam and interferometric bathymetric systems with present support for processing

  • Real-time with Synthetic Aperture Sonar Synthetic Aperture Sonar (SAS) is a technique for creating high resolution seabed imagery that shares many similarities with Synthetic Aperture Radar (SAR).  The forward motion of the sonar is used to synthesize an array that is much longer than its physical length

  • Operation of marine survey vessels in shallow-water coastal environments is a dangerous endeavor. A subsurface obstruction can tear a multi-beam sonar from its tow cable, resulting in loss of the expensive device and potential delay in the expedition. Lost equipment, however, is a minor inconvenience

  • Raytheon Ocean Systems Company has added a new frequency to its popular DSF-6000 Digital Survey Fathometer® depth sounder, creating a newly configured, "deepwater" instrument package at no increase in price. The DSF-6000 now has, in addition to existing frequencies of 24, 40, 100, and 200 kHz

  • Imagenex has released new additions to its line of products. The new Model 878 Sidescan Sonar is the next generation in high resolution sidescan sonar. The unit runs two simultaneous sonars on each side at different sound wavelengths for enhanced image clarity. The Model 878 “RGB” Sidescan (triple simultaneou

  • Seafloor mapping is one of the oldest professions known to humankind. Mariners have been measuring the depths under their vessels for thousands of years. The science of measuring and charting the depths to determine the topography of the seafloor is known as bathymetry.  Bathymetry is gathered from a

  • 4 Little Brook Road, West Wareham, MA, USA 02576 T: +1 508 291 0057 E: info@edgetech.com W: www.edgetech.com CEO/President: R. Jablonski Number Of Employees:  100 The Case: EdgeTech is a manufacturer of underwater technology solutions known for its: side scan sonars, sub-bottom profilers, bathymetry

  • 113 Terminal Road    Conception Bay South, Newfoundland/Labrador    Canada A1X7B5 T: 7097435220    E: gleyte@krakensonar.com    W: http://www.krakensonar.com    CEO/President: Karl Kenny    No. of Employees: 20      Kraken Sonar Inc. is a marine technology company engaged in the design,

  • 50 Harbor Drive, St. John’s, Newfoundland & Labrador, Canada A1C6J4 T: +1 508 822 7330 E: gleyte@krakensonar.com W: http://www.krakensonar.com CEO/President: Karl Kenny No. Of Employees: 9   Kraken is a marine technology company engaged in the design and development of high performance sonars and

  • General Instrument Corporation's Defense Systems Group recently announced that their Government Systems Division received a $3.4-million award from a foreign nation for spares and support equipment for their ALR-606(V)2 ESM System. The fully automatic ALR- 606(V)2 ESM System performs over-the-horizo

  • Chesapeake Technology  announced an advance to its flagship software SonarWiz processing with the addition of a Real-Time Acquisition Server for the EdgeTech 4600 and recently-introduced EdgeTech 6205 interferometric bathymetry systems. The EdgeTech bathymetry systems are unique in the industry offering

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