Sonar Systems News

Figure 6: A DOLPHIN Sonar trial result, SAS at three times Nyquist speed. Image: QinetiQ North America

DOLPHIN: Enabling Technology for Acoustic Systems

SAS with no gap.  In fact, the forward scatter from either sidescan (A or B) can be used by the other sidescan (B or A) to improve the resolution in the area that both sides overlap.  In addition to the obvious benefit of improved coverage, DOLPHIN processing can provide other advantages to sonar systems including increased resolution and adaptability to environmental concerns such as marine mammal safety.Figure 4: Typical Side-scan displays a gap in coverage. Image: QinetiQ North AmericaLab and Field TestingDOLPHIN Comms and Sonar proof-of-concept (POC) demonstrations have been successfully

Photo: RTsys/French Navy

French Frigate Sonars Get an Upgrade

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

(Photo: JW Fishers)

Underwater Metal Detectors Get the Job Done

a ship's propeller dislodges from a vessel and falls to the murky bottom below? Most of the time, the operator does not have the necessary tools to find the missing equipment and must hire an outside diving company to aid in the search. These companies utilize a varying degree of equipment from sonar systems to underwater metal detectors.Marine Diving Service, which provides marine diving services to customers on the east coast of the United States, utilizes JW Fishers’ Pulse 8X in its daily operations. Marine Diving Service's salvage track record includes everything from small objects

Logo: ASL

ASL Hires Taillefer

in the oceanographic tactical domain. He spearheaded operational oceanography, acoustic modeling and decisional technologies with DND, General Dynamics (GD) Canada and Fisheries and Oceans Canada (DFO) since the early 1990s.  At GD Canada, his work spanned from coordination and installation of sonar systems aboard Swedish warships at two Swedish shipyards (Karlskrona and Muskö Naval Base), worked on the Sikorsky CH-148 Cyclone (MHP) program and the Aurora Modernization.  At DFO, he led the Earth Observation Funding Program for DFO scientists, was the architect of the CONCEPTS collaboration

Seagull fitted with KATFISH for remotely operated mine countermeasures and underwater surveillance
Photo: Kraken Robotics Inc.

Kraken Completes Sea Tests of KATFISH with Elbit Systems

area coverage rates. The ability to generate centimeter-scale sonar resolution in all three dimensions has the potential to provide significant improvements in the detection, classification and identification of small seabed objects such as underwater mines and IEDs.From a platform perspective, towed sonar systems have the benefit of acquiring sonar data to operators at high speed and in real-time. This is a critical feature for mine-hunting operations to enable the earliest possible identification and classification of underwater threats. Onboard processing enables real-time analysis of sonar data, significant

EdgeTech 2205 sonar image of ARA San Juan 230kHz at 400m range scale (Credit: Ocean Infinity)

Sonar Helps Find Missing Argentine Submarine

400-meter range scale.EdgeTech’s tri-frequency side scan sonar frequency combination of 75/230/410 kHz enables the host AUV to perform long range searches in deep water, with the middle and higher frequency providing added resolution for better target identification.EdgeTech said its side scan sonar systems provide operators the ability to image large areas of the seafloor during deepwater searches when the whereabouts of sunken objects are largely unknown

CARIS Onboard can be used to process and monitor survey data from multiple platforms (Image: Teledyne CARIS)

Teledyne CARIS to Present at Hydro 18

Processing through Machine Learning’ on October 30, 5:30 p.m. presented by Burns Foster, Manager of New Product Initiatives, Teledyne CARIS. Attendees will learn how this newly assembled machine-learning algorithm is being used to automatically identify and classify common types of noise in sonar systems to significantly reduce manual data cleaning.Teledyne CARIS has also co-authored two additional papers, which will be showcased at Hydro 18:November 1, 3:50pm - ‘Monitoring Quality of Over the Horizon Autonomous Surveys’ presented by David Field, Operations Director, iXblueNovember

Dr. Steve Pearce (Photo: ASL)

ASL Hires Acoustics Scientist Pearce

multipath interference while preserving the seafloor return, and the effectiveness of these methods was established through theory, simulation, and numerous field studies.Prior to joining ASL, Pearce was a System Engineer at Kongsberg Mesotech and managed projects relating to singlebeam and multibeam sonar systems. At Mesotech, he gained experience in many aspects of the product lifecycle, including requirements gathering and refinement, hardware and software design, design verification and field testing, manufacturing and customer support

Kraken Awarded $1 Million Defense Contract

in this segment and sees major opportunities within the upcoming Canadian Underwater Warfare Suite Upgrade, the Canadian Surface Combatant program and other international underwater surveillance programs.Kraken’s Acoustic Signal Processing Group has 80+ years of combined experience in sonar systems development and integration. Their core competency is implementation of digital signal processing and user interface software for Anti-Submarine Warfare (ASW) sonar applications. This work frequently involves integration with embedded processing platforms for shipboard or shore-based analysis

NERC Purchase NORBIT WBMS Systems for AUV Project

Seeking a robust system that has been proven for under-ice mapping, the National Environmental Research Council (NERC) has appointed NORBIT to supply two multi-beam echosounder (MBES) sonar systems for use on the National Oceanography Centre’s (NOC) new 2,000m depth rated AUV platform Autosub2KUI.With the small form factor WBMS Deep Water multibeam systems, NORBIT’s systems will ensure high data quality and ease of operation for the team at NOC often operating in challenging environmental conditions, the manufacturer said.This will support future under-ice and deepsea science, including a

Photo: EdgeTech

$17B Spanish Galleon San Jose: EdgeTech Instrumental

galleon of a Spanish fleet carrying gold, silver and emeralds from the mines of Peru back to Spain.  It was sunk June 8, 1708 in a battle with the British off of Cartagena, Colombia. The ship sank so quickly that there were only 11 survivors of the 600 people onboard. EdgeTech side scan sonar systems provide operators the ability to image large areas of the sea floor during important deep-water searches when the whereabouts of sunken objects are largely unknown.  EdgeTech’s unique side scan sonar frequency pairing options such as 400 / 900 kHz enable very high-resolution searches

Marine Technology Magazine Cover Jun 2019 - Hydrographic Survey: Single & Multibeam Sonar

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