Sonar Buoy Technology

  • Since summer 2017, four vessels equipped with analog sonars have been upgraded using RTsys AS3i technology (Analog Surface Ship Sonar Improvement), which digitalized and improved the processing of signals rendered by sensors.

    Brittany-based company RTSYS does not only deals with AUV, subsea recorders and buoys, but can also display a full range of sonar systems such as handheld devices for divers or sonar retrofit. The latter of which led the French SME to lately offer in summer 2017 its services to the French Navy by upgrading analogue sonars on four frigates.

    In accordance with the ACORES public procurement program (a French acronym standing for Frigate Sonar Capacity Upgrade), RTSYS featured a reliable solution based on its SDA (Synchronous Data Acquisition) technological core to digitalize and process the signals received, without any modification on the existing transmitters and transducers.

    This system has been installed on three Anti-Submarine Warfare Frigates FASM in Brest (Brittany, France) and on one Anti-Aircraft Frigate FAA based in Toulon by the Mediterranean French coast, thereby providing them with effective digital tools in order to avoid the costly replacement of the entire sonar system.

    Improved signal processing significantly enhances reception especially thanks to the SDA motherboard running on all RTSYS products and providing very neat acoustic rendering. Thanks to signal digitalization, new User Interface is also to be displayed through HD color screens aiming to replace old analog ones. This intuitive Man-Machine Interface allows several screen configurations such as active or passive mode, torpedo mode, or PPI picture (Plan Position Indicator) and can accept multiples codes (Continuous Waves, Hyperbolic Frequency Modulation or Combo Mode). It is also to be noted that this upgrade increases bandwidth along with the duration of the pulse which gives crystal-clear signal at the reception and more specifically in the reverberation.

    French ASW Frigate. Photo Courtesy French Nayv.

    RTSYS project manager and ex-French Navy Commander Christian Nicolas said: “This is a smart system we developed as it works on various sides. First of all, it allows tremendous gain of time for Navies as the upgrade does not run for too long so the crew can quickly be back onboard. Secondly, the overall solution is cost-effective as we do not replace the HMS and VDS transducers; only receivers, processors, computers, monitors and operating consoles are. Finally, crews gain skills while training: data from previous missions are logged into the AS3i and can be set to replay mode. Thanks to the mission simulator, users can generate acoustic training simulations to meet requirements such as submarine or torpedo detection in either active or passive modes”.

    In addition to signal improvement this upgrade means that the frigates sonars have new aptitudes such as the ability to extract objects and pursue them. Besides, an automatic torpedo detection system running as a background process emits warning signals based on simple detection criteria to attract the operator's attention. The operator nonetheless still decides whether or not to confirm an alert. Implementing the RTSYS solution will make these frigate sonars compatible with other digital measuring devices, so this will definitely enhance Navies’ onboard crew skills by letting them train more efficiently to Anti-Submarine Warfare and gain reactivity in case of troubles.

    “This system is really easy and convenient to use and we provide constant technical support along with all necessary training to the crew so this technological upgrade goes really smoothly. After all this is what RTSYS partly does: improving training capacities such as we already do with our SEMA Training Target for Anti-Submarine Warfare,” Nicolas concludes.



    Christian Nicolas is a former French Navy Commander. He now offers his expertise at RTSYS.

  • President: Michael Mitchell Engineering Director: Ronald Allen Number of Employees: 55 L-3 Klein Associates is a leading supplier of side scan sonar equipment, and waterside security and surveillance systems to navies, shipbuilders, secure installations, researchers, oil & gas explorers, and hydrographer

  • Employees: 50   L-3 Klein, a division of L-3 Marine & Power Systems is a leading sensor technology provider that designs and manufactures high-resolution sonar systems and radar-based security and surveillance systems. L-3 Klein is a sensor technology provider that manufactures and designs high-resolution

  • Chesapeake Technology Inc. (CTI), a producer of real-time sonar acquisition and GIS based processing software for seafloor mapping, announced two new capabilities that it claims will allow users to better organize sonar contacts and improve sonar mosaic accuracy. New Contact Rationalizing, available on

  • 50 Harbour Drive St. John’s, Newfoundland, Canada A1C 6J4 Tel: 709.757.5757 Email: kkenny@krakensonar.com Website: www.krakensonar.com CEO/President: Karl Kenny # of Employees: 12     Kraken is a developer and manufacturer of AquaPix - a Synthetic Aperture Sonar used by military and commercial

  • AXYS Technologies delivered three TRIAXYS Next Wave Directional Wave Buoys to Instituto Oceanográfico De La Armada (INOCAR) of Ecuador. These TRIAXYS buoys will be added to the existing coastal wave monitoring network of TRIAXYS buoys owned by INOCAR and deployed along the Ecuador coastline. The mission of

  • by Marty Klein in 1968, in a small factory in Salem, New Hampshire, USA, Klein Associates became the first commercial manufacturer of side scan sonar in the world. Since then, L-3 Klein Associates has become the leading supplier of side scan sonar equipment, and waterside security and surveillance

  • RJE International manufactures sonar beacons, diver navigation, diver sonar and underwater relocation products. RJE is a leader in acoustic marking and re-location systems, diver navigation, sonar underwater communications and small boat navigation for the military and divers worldwide. The company carries

  • 2045 Mills Road, Sidney, British Columbia V8L 5X2 T: 250-655-5850 E: info@axys.com W: http://axystechnologies.com/ CEO/Presdient: Terry Tarle Engineering Director: Reo Phillips No. of Employees: 40   The Company The AXYS story began with marine consulting contracts to Environment Canada for wave

  • Teledyne Benthos and Teledyne Odom Hydrographic announced the transfer of the Benthos geophysical sonar portfolio, including the Chirp III Subbottom profiler, C3D interferometic sonar and SIS-1725 side-scan sonar to Odom Hydrographic. This realignment of products and technologies allows both organizations

  • 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 systems, AUV and ROV-based sonar systems, USBL systems, transponder beacons, deep sea and shallow water acoustic

  • Kraken Continues to Innovate & Expand   St. John’s, Newfoundland based Kraken Sonar is a leader in delivering advanced Synthetic Aperture Sonar systems. Kraken’s goal is to bring innovative and disruptive technologies to the maritime sector, while reducing costs and increasing capability. Kraken believes

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  • MT Apr-19#59 ployment and retrieval.  Its portfolio of  ers in the)
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    ployment and retrieval. Its portfolio of ers in the marine, construction, indus- Hawboldt Industries Hawboldt is a designer and manufac- rental equipment includes winches with trial and oil and gas industries. Based turer of custom-built Launch and Recov- a variety of cables, mobile A-frames in in New

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    towed ve- Q winches for ef? cient handling of in- ing A-frames, 45° launch position A- hicles (ROTV) includes the MacArtney spection ROVs, side scan sonar, survey frames, horizontal launch position A- FOCUS 2, FOCUS 3 and TRIAXUS equipment, oceanographic instrumen- frames, low dip A-frames and container

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    come one of the principal innovators in the subsea imaging and measure- ment industry. It is headquartered is in BIRNS, Inc. Kildare, Ireland with of? ces in the U.S., BIRNS started out in the subsea the U.K., China and Australia. industry creating underwater cam- Currently the company is building

  • MT Apr-19#56 , DVRO solutions  revolutionary sonar positioners that are )
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    systems including technology, new LED lighting ideas and engineering, system integration and cameras, lights, lasers, DVRO solutions revolutionary sonar positioners that are project planning. SIDUS staff have trav- for easy media management, and even lightweight and accurate. Whether it’s eled the

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    1,700-kilometer mission autonomously collecting ? sheries thus increasing mission ef? ciency. acoustics and physical properties of the sea surface. As part Looking back 20 years, we celebrate the progress and ad- of this multi-vehicle mission under the U.K. NERC/Defra vancements made in ocean observatio

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    ver the past 20 years, great strides have been made Sea? oor geodesy projects are underway across the globe, all in the ability to observe and monitor the worlds’ in pursuit of scienti? c advances that will help us crack the ocean. Just think that less than two decades ago, one code on earthquake and

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    n Europe, where offshore turbines heavily dot maritime tween wind turbines. The spooling system can also be mount- maps, there’s acknowledged room for innovation in ed as a barge. turbine construction, support shipping and subsea. In- Spooled cable is custom “spun” like yarn from a ? xed or Istallations

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    AUV visuals: Swire Seabed’s user interface. Photo: Swire Seabed Norway has announced it will follow the Cooke Isles example of issuing licenses to quali? ed subsea mining companies. Ocean Minerals’ quali? ed offshore process involves low- ering pipe bound to nodule-harvesters on the seabed. Nod- ules

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    waii, underwater mining tools target the whole gamut of min- of major offshore acreage awards. Deepsea miner, Ocean ing support tasks. Minerals, says REEs are “17 chemically similar metals con- sisting of the 15 elements known as the lanthanides plus yt- High-stakes ops trium and scandium” and they’re of

  • MT Apr-19#37  modeling and for assisting  sonar types) in a versatile)
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    by a vessel with moonpool. sensors (multiple cameras, laser-based light systems, multiple “EVA is used for real-time pit modeling and for assisting sonar types) in a versatile and highly maneuverable system. the underwater cutting operations providing visual and de- It was used successfully in a challenging

  • MT Apr-19#35 tenance activities, these are effectively hotel boats with)
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    tenance activities, these are effectively hotel boats with a lot term we want to develop the HAUV track and survey buried of redundant time. We have developed HAUV to be able to be cables autonomously. Various pipe tracking technologies are deployed and recovered from these vessels essentially replac-

  • MT Apr-19#33  echosounder (MBES), sidescan sonar 
So, Modus looked at Saab)
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    a “mow the lawn” style pre-programmed survey our eyes, defeated the object of the autonomous feature.” collecting multibeam echosounder (MBES), sidescan sonar So, Modus looked at Saab Seaeye’s Sabertooth. “It’s a cross (SSS) and sub-bottom pro? ler (SBP) data over about a 15-ki- between an ROV and an AUV

  • MT Apr-19#32  with. It came with a side scan sonar, but 
vessel or offshore)
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    the right vehicle for the activities at a speci? c location, such as a supply vessel, dive support Modus were involved with. It came with a side scan sonar, but vessel or offshore renewables service vessel. The HAUV can customers wanted bathymetry and, like many AUV systems, it then perform inspection