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Latest Sonar Stories

2010-11-15 13:54:56

GUMC neuroscientists find brains of bats tell some neurons to 'shush' and others to 'yell louder' in order for key sounds to be heard above background noise How do you know what to listen to? In the middle of a noisy party, how does a mother suddenly focus on a child's cry, even if it isn't her own? Bridget Queenan, a doctoral candidate in neuroscience at Georgetown University Medical Center is turning to mustached bats to help her solve this puzzle. At the annual meeting of the Society for...

2010-11-04 07:15:00

SUNNYVALE, Calif., Nov. 4, 2010 /PRNewswire/ -- Onda Corporation, the global leader in ultrasound measurement solutions for medical and industrial markets, introduced the latest additions to the hydrophone product family at the IEEE Ultrasonics Symposium in San Diego. The HFO-660 is a new fiber optic hydrophone system that can measure acoustic pressures up to 500 MPa for emerging applications of HITU. It is complemented with the release of the latest generation acoustic scanning system,...

2010-10-07 08:00:00

TEWKSBURY, Mass., Oct. 7, 2010 /PRNewswire/ -- Raytheon Company (NYSE: RTN) received a $14.6 million U.S. Navy contract to produce and deliver AN/ASQ-235 Airborne Mine Neutralization Systems. AMNS, an essential component of the Navy's organic mine countermeasures family of systems, is deployed by the MH-60S multimission helicopter to locate and destroy underwater mines previously detected by Raytheon's AN/AQS-20A minehunting sonar system. Both AMNS and AN/AQS-20A provide critical...

2010-09-22 08:35:00

GIVAT SHMUEL, Israel, Sept. 22 /PRNewswire/ -- DSIT Solutions Ltd., a subsidiary of Acorn Energy, Inc. (Nasdaq: ACFN), announced today that it has received orders from an Asian country for its underwater sonar systems. The combined value of the contracts is more than $6 million. Dan Ben-Dov, VP Sales & Marketing said, "This is the second order of this magnitude that we have received over the past few months, as we continue to grow our leading position in the worldwide market for...

2010-09-01 20:25:44

Speakers made from carbon nanotube sheets that are a fraction of the width of a human hair can both generate sound and cancel out noise -- properties ideal for submarine sonar to probe the ocean depths and make subs invisible to enemies. That's the topic of a report on these "nanotube speakers," which appears in ACS' Nano Letters, a monthly journal. Ali Aliev and colleagues explain that thin films of nanotubes can generate sound waves via a thermoacoustic effect. Every time that an electrical...

2010-07-08 07:33:00

SUNNYVALE, Calif., July 8 /PRNewswire/ -- Onda Corporation, the global leader in ultrasound measurements, celebrated the 2000th hydrophone shipment. The hallmark unit, a polymer-based HNP hydrophone, shipped to St. Jude's Medical where it is used to test the acoustic properties of their medical transducers in production. Ms. Adrienne (Cooper) Prasad, senior manufacturing engineer, comments, "We have used many Onda hydrophones over the years as part of a Production tester that helps us...

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2010-06-22 09:50:00

Tracking fish across Alaska's vast continental shelves can present a challenge to any scientist studying Alaska's seas. Researchers at the University of Alaska Fairbanks have successfully tested a possible solution in the form of underwater gliders. Last month, Peter Winsor, associate professor of physical oceanography, and Andrew Seitz, assistant professor of fisheries, tested the use of autonomous underwater vehicles, called gliders, for tracking tagged fish. Winsor and Seitz suspended...

2010-06-09 07:30:00

GIVAT SHMUEL, Israel, June 9 /PRNewswire-FirstCall/ -- DSIT Solutions Ltd., a subsidiary of Acorn Energy Inc. (Nasdaq: ACFN), has announced today that it will officially introduce its new lightweight, compact, portable Diver Detection Sonar (DDS) system, the PointShield(TM) DDS at two exhibitions taking place in Europe and the United States this month. The first is the Underwater Defense Technology (UDT) Conference and Exhibition that is taking place June 8 - 10 in Hamburg, Germany and the...

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2010-05-12 12:30:14

Scientists from the Naval Research Laboratory at Stennis Space Center, MS, (NRL-SSC) and Washington, D.C., recently completed an investigation of the acoustic properties of the deep seafloor in the Gulf of Mexico. Scientists on the cruise measured the effects of geologic faulting on the efficiency of acoustic wave propagation. "Knowing the bottom loss-the amount of sound energy lost with each bounce off the bottom-affects how far away one can 'see' a target in the ocean using sound," said...

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2010-05-11 13:16:46

Bats' remarkable ability to "Ëœsee' in the dark uses the echoes from their own calls to decipher the shape of their dark surroundings. This process, known as echolocation, allows bats to perceive their surroundings in great detail, detecting insect prey or identifying threatening predators, and is a skill that engineers are hoping to replicate. A team of British researchers has worked with six adult Egyptian fruit bats from Tropical World in Leeds to record and recreate their...


Word of the Day
omadhaun
  • A fool; a simpleton: a term of abuse common in Ireland and to a less extent in the Gaelic-speaking parts of Scotland.
This word is partly Irish in origin.