Obstacle Avoidance Sonar

Sonardyne International, UK, has announced the launch of its new Navigation and Obstacle Avoidance Sonar, NOAS, at NAVDEX 2013 in Abu Dhabi. Designed for use on submersible vehicles, NOAS enables faster, safer and more efficient navigation by detecting and classifying potentially hazardous underwater obstacles in its path. Unveiled on the first day of the exhibition, NOAS provides a unique combination of very long range 2D navigation performance, 3D object detection and class leading intruder detection in a single compact sonar. In 2D mode NOAS provides the crucial long range navigation information enabling underwater vessels to steer a safe course. When... (read more)
2013-02-19 04:26:09

Multibeam Sonar Training Course

The 51st UNB-OMB / UNH-CCOM Multibeam Sonar Training Course, co-hosted by the Directorate of Hydrography and Navigation, Brazilian Navy, will be held from 23-28 November 2009 at the Hotel Orizzonte, Niterói, RJ, Brazil and this will be first time the course has been conducted in South America.     The Multibeam Course is a 36-lecture, 6-day course primarily designed to provide a theoretical and practical background in marine multibeam survey technology and techniques. The information is tailored for those using marine multibeam survey systems in both the traditional hydrographic survey field (for safety of navigation and nautical charting) as well... (read more)
2009-10-19 10:14:45

Synthetic Aperture Sonar Challenges

Synthetic aperture sonar (SAS) has been under active development for decades. The technique is particularly well suited for autonomous underwater vehicles, and it is expected that SAS will replace traditional side-scan sonars for many ‘high-end’ AUV applications in the years to come. Research systems have been used for more than 15 years and many R&D groups around the world have been able to present images that would not have been possible to produce using traditional sonars. However, in many cases, these impressive sonar images are the result of days of tuning and tweaking by experts. A lot of effort has... (read more)
2008-05-15 12:00:00

Edgetech Sonar Training Seminar

EdgeTech, USA, will be holding its annual sonar training seminar in New Bedford, Massachusetts, USA, from 24 to 26 September 2013. This course will cover sonar theory, operational training, system maintenance and post processing data for all of EdgeTech’s standard sidescan sonar, sub-bottom profiling and combined systems. The format for the 3-day seminar includes two days of classroom instruction and one day at sea. Topics and systems to be addressed include the following: • 4125 Side Scan Sonar Shallow water side scan sonar operations • 4200 Side Scan Sonar Offshore multifaceted side scan sonar solutions • 3100 Sub-bottom Profiler Sub-bottom... (read more)
2013-08-13 03:41:00

Acoustic Classification by Sonar

Disparate approach successful in cost-effective mapping
A breakthrough in signal conditioning has lead to significant improvements in single-beam and swath classification. With modern computers, this allows cost-effective bottom classification across multiple sonar platforms. The common dataset generated as a result of the highly successful shallow-survey conferences sponsored by the University of New Hampshire Ocean Mapping Group and the Defence Scientific and Technical Organisation of Australia is an ideal proving ground for classifying the same seabed using multiple platforms. The results of processing and classifying a common dataset are presented in this article. Acoustic seabed classification is in wide use for applications from habitat mapping to mine... (read more)
2008-01-01 01:00:00

Sonar Uncertainty Instrument

L-3 Klein (USA) is to present the HydroChart 5000 (HC5000) Sonar Uncertainty Model at the upcoming Shallow Survey 2012 Conference to be held in Wellington, New Zealand, from 20th to 24th February 2012. The HC5000 is a portable, high-speed hydrographic survey system able to simultaneously collect IHO-quality bathymetry and co-registered, high-resolution, multi-beam side scan sonar data.   In order to qualify the system for use in hydrographic survey, L-3 Klein developed an uncertainty model which makes use of existing theoretical models of acoustic propagation, bottom and surface scattering, array processing, bathymetry signal processing, and statistical processing. This model was statistically... (read more)
2012-01-17 02:18:25

Edgetech Sonar Demonstrated

EdgeTech is to demonstrate the latest technology in side-scan sonar and swath bathymetry at the upcoming US Hydro 2011 Conference in Tampa, Florida, from 25th to 28th April. EdgeTech's vessel, the Ocean Research II, will be outfitted with various equipment. EdgeTech's 4600 combines the high resolution 2D capabilities of a side-scan sonar with the 3D imagery of a multi-beam echo sounder. The result is a highly effective survey tool that produces real-time high resolution 3D maps of the seafloor and is simple to use and cost-effective. The 4200 is EdgeTech's most versatile side-scan sonar system and can be configured for... (read more)
2011-03-04 12:00:00

Successful Sonar Software Workshop

Chesapeake Technology recently hosted over 63 professionals for a hands-on training seminar focusing on the use of sidescan and sub-bottom sonar software. The three-day event held in the Charleston (South Carolina, USA) area was CTI's third annual workshop for underwater survey professionals.   The training included two four-hour sessions aboard the Silver Crescent, a research vessel provided by South Carolina's Department of Natural Resources. As the participants experienced the field exercise aboard the Silver Crescent, the ship simultaneously towed two sidescan sonars. Both systems, a Klein System 3900 (courtesy of L-3 Klein) and a Marine Sonic Sea Scan PC system... (read more)
2008-01-14 10:51:25

Kraken Sonar for ECA AUV

Kraken Sonar (Canada) has been awarded a contract valued at over USD325,000 by ECA Robotics (France) to supply and help integrate its AquaPix Miniature Interferometric Synthetic Aperture Sonar and Embedded Real-Time SAS Signal Processor on the A18D AUV. Kraken's AquaPix is a sonar system providing military grade technology providing 3D seabed imaging, faster data processing and a lower cost than conventional sonar. AquaPix is designed for operation on AUVs, manned and unmanned surface vessels and towed bodies. The modular system uses the latest electronics, transducer arrays and signal processing software optimised for the demanding size, weight, power and cost constraints... (read more)
2015-08-12 09:52:18
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