Acoustic Communications News

Mike Read (Photo: Teledyne Marine)

5 Minutes with Mike Read, President, Teledyne Marine

Bowtech’s LED-K-Series lamp now includes four lumen outputs; 2,100, 3,200, 4,200 or 5,000 lumens.Teledyne Marine InstrumentsThe Teledyne Marine Instruments provides subsea and surface sensors that span a range of technologies, including: navigation; ocean currents/waves measurements; CTDs; acoustic communications, positioning and releases; pipe and cable tracking; corrosion monitoring, and more. Instruments brands include: Benthos, Cormon, Oceanscience, RD Instruments, and TSS, and new tech in 2018 includes:Teledyne TSS reports high demand for its compact new 660 Pipe Tracker, enabling smaller electrical

(Photo: ASV Global)

Symbiotic Autonomy for Deep Water Survey

and control, with high-speed through-water data transfer also lays the ground work for long-range, over-the-horizon autonomous underwater vehicle survey operations,” he added.Matthew Kingsland Senior Robotics Systems Engineer, NOC, said, “We are now able to send down new missions via acoustic communications to avoid the ALR having to surface from 6 kilometers deep. We are not only tracking, we are getting quality data back from the system via acoustics, so we can make informed decisions.”“Under this project, we have demonstrated a novel autonomous behavior running under the Neptune

ATM-900 Series Modem (Image: Teledyne Benthos)

Teledyne Benthos Acoustic Modems Meet NATO’s New JANUS Interoperability Standard

between equipment from the various ACOMMS manufacturers.To address this need, over the past 10 years the Centre for Maritime Research and Experimentation has been leading the efforts to develop a digital underwater coding standard aimed at providing a baseline common denominator for underwater acoustic communications. This new standard is called JANUS, named after the Greek God in control of beginnings and transitions. As of March 2017, JANUS is now recognized as a NATO standard referred to as STANAG, a Standardization Agreement by all the NATO Nations.According to a recent CMRE press release, once adopted

WiSub CEO Mark Bokenfohr (Photo: WiSub)

WiSub’s Universal AUV Connector

waves. Microwaves are defined to operate in the 300MHz to 300GHz frequency range; the other technologies applied in the field of underwater communication typically operate at far lower frequencies, and correspondingly lower data rates. Data speeds of kbps (kilobits per second) are possible with acoustic communications. Radio-frequency communication links (within the 3 KHz to 300 GHz range) are able to achieve similar data speeds over some meters. Inductive links used for power transfer are often also used for data transfer, with small separation between frequencies, which presents some risk of interference

Image: NATO

JANUS: First Digital Underwater Communication Standard

of new game-changing robotic technologies. That is why the NATO STO Centre for Maritime Research and Experimentation (CMRE), based in La Spezia (Italy), has started about 10 years ago to develop a digital underwater coding standard aimed at providing a baseline common denominator for underwater acoustic communications. It is called JANUS and it has been now recognized as a NATO standard, called a STANAG for Standardization Agreement, by all the NATO Nations. This marks the first time ever for a digital underwater communication protocol to be acknowledged at international level, and it opens the way for

Photo courtesy of Sonardyne

Sonardyne Demonstrates its Technology for NASA

technologies to simulate some of the typical remote inspection and intervention scenarios its low risk technology can be utilized for. 6G sensor nodes suspended mid-water were used to show how critical data from remote assets such as satellite wells can be recovered using robust, long range acoustic communications. On the pool floor was Sentry IMS, a wide area sonar that automatically warns operators of integrity breaches around subsea oil and gas assets. Positioning moving targets in the water was Ranger 2, a high accuracy system for tracking and commanding ROVs and AUVs as they carry out their work

Ocean Business Training & Demo Program Unveiled

; Other sessions include Planet Ocean introducing the ecoSUB range of innovative, low cost, micro AUVs demonstrating how this disruptive technology can change the way ocean data is gathered; Liquid Robotics presenting how USVs have a natural role in the ‘Digital Ocean’, linking acoustic communications of the subsea with the radio communications of air and space to enable new capabilities and Seafloor Systems demonstrating their EchoBoat-ASV, a two-man portable, customized vehicle, featuring multibeam sonar integrated with INS/GNSS and real-time SVP.   In addition to more than 340

Saab’s Sabertooth vehicle can be configured as a conventional tethered ROV or free-flying AUV depending on the operational requirements of the user. (Photo: Sonardyne)

Saab Seaeye Selects Acoustics for Sabertooth Hybrid Vehicle

Subsea technology company Sonardyne International Ltd has delivered its latest consignment of AvTrak 6 acoustic communications and navigation hardware to defence and security company Saab’s subsidiary Saab Seaeye. Offered as an optional-fit sensor on the Sabertooth hybrid AUV/ROV, AvTrak 6 forms part of the vehicle’s integrated navigation and communications system. It allows mission updates, status checking and navigation aiding to be wirelessly sent to and from the vehicle, eliminating the need for the vehicle to re-surface or dock with an underwater garage.   The unique design

(Image: Hydroid)

Hydroid Introduces the New Generation REMUS 100 AUV

cells and have the same electrical configuration as the REMUS 600 pack currently in use.    • Modular Elliptical Nose: The redesigned elliptical nose on the New Generation REMUS 100 can reduce drag by 20 percent. In addition, it’s acoustically transparent, so that the acoustic communications (ACOMMS) transducer can be relocated inside the nose. Because the new nose uses the same modular interface on the existing REMUS 100, it can be easily integrated on both current payload modules and the new generation REMUS 100.   • Open Architecture: The New Generation REMUS

Image: BAE Systems

US Navy Seeks Improved Undersea Capabilities

GPS sources and corresponding small-form factor receivers.”   The vehicle instrumentation needed to capture and process acoustic signals for accurate navigation will also be developed under this program. The company will leverage its expertise and capabilities in signal processing, acoustic communications, interference cancellation, and anti-jam/anti-spoof technologies for the program. Other members of BAE Systems’ POSYDON team are the University of Washington, the Massachusetts Institute of Technology, and the University of Texas at Austin

David Peddie

Sailbuoy Takes Off

has been guiding the Sailbuoys design from the beginning.    In looking at your vessel and its capabilities, rank the top markets and/or niches you see it serving best, with short descriptions explaining why. Acoustic data retrieval from subsea instruments in real time: Acoustic communications enable continuous data collection with a huge potential impact on research (data recovery from conventional moorings) and oil-gas industry (monitoring of leakage, corrosion and pig - logging). Data retrieval provides operators and scientists with valuable and timely information, and further

REP16A Photo CMRE

REP16: a Global At-sea Campaign

Alliance.    CMRE scientists on board the NATO ship, in particular, are testing collaborative autonomous behaviours of underwater vehicles for ASW applications, while also testing the performance of network-based solutions for vehicle localization and navigation. For underwater acoustic communications, networking and equipment capabilities are being tested, including Wave Gliders used as autonomous gateways. The exercise includes an assessment of the capabilities of JANUS, an underwater digital communication protocol, developed at CMRE, which is in the process of becoming a NATO standard

Image: EvoLogics

MTR100: EvoLogics

Founded in 2000 by a group of international scientists and R&D experts, German high-tech enterprise EvoLogics GmbH specializes in underwater acoustic communications, acoustic positioning equipment and innovative solutions for robotics. The Berlin-based company says its mission is to develop innovative technologies for maritime and offshore industries through interdisciplinary cooperation between engineering and life sciences.   EvoLogics designs and manufactures underwater information and communication systems based on bionic concepts, combining state-of-the-art engineering with the best

Vector Hawk (Image: Lockheed Martin)

First Underwater Unmanned Aircraft Launch from an AUV

and completely autonomously,” said Kevin Schlosser, chief architect, unmanned systems technology, Lockheed Martin.   During the Annual Navy Technology Exercise (ANTX) activities in August, the Submaran relayed instructions to Marlin from a ground control station via underwater acoustic communications. Following these instructions, the Marlin launched the Vector Hawk using a specially-designed canister from the surface of the Narragansett Bay. Following launch, Vector Hawk successfully assumed a mission flight track. All three autonomous vehicles—Marlin, Submaran and Vector Hawk&mdash

Airmar Acquires Former Materials Systems Inc.

process, which involves injection molding ceramics to enable the production of high-performance composite transducers at low cost, will provide Airmar the ability to broaden its technology base. This is particularly important for applications such as imaging, hydrographic survey, acoustic communications, and defense. The benefits of the innovative technology include increased sensitivity, wide bandwidth, and high transducer efficiency. “In addition to acquiring all the assets, MSI Transducers Corp. has retained the complete management and production staff in the CTG

Whitcomb and his post-doctoral student Christopher McFarland’s technical efforts on this expedition focused on the development of NUI’s novel navigation, control, and acoustic telemetry systems, which were first prototyped on the Homewood Campus with Whitcomb’s underwater testbed vehicle, the JHU ROV, in his Hydrodynamics Laboratory in Krieger Hall.

Adventure Under Ice

;an animal masticating on or running into this lightweight tether. In the face of these many risks, Nereid is elaborately programmed with fail-safe mechanisms. “If the tether gets severed during a dive, Nereid will automatically descend to a pre-programmed depth below the ice and use acoustic communications to signal its position. Then the team sends acoustic commands to guide it back to its mother ship for recovery,” he says. Dead Reckoning In an era of ubiquitous GPS positioning, it is hard to imagine that navigation is an issue for Nereid, but the thick shroud of ice and water

Dr. Harold Robinson (Photo: NUWC)

Dr. Harold Robinson Named Top Scientist of the Year

team for more than 25 years, Robinson has become a leading expert in single crystal transduction within the U.S. Navy and international defense communities. He has designed and tested single crystal prototype transducers to demonstrate these properties for torpedo and sonar countermeasures, acoustic communications, torpedo homing, swimmer defense and nontraditional antisubmarine warfare applications for the past 10 years.    In 2014, Robinson demonstrated the effectiveness of utilizing single crystal arrays for small unmanned undersea vehicles, and he developed and tested a compact, low-frequen

Marine Technology Magazine Cover Jan 2019 - Underwater Vehicle Annual

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