New Dolphin-Inspired Sonar Concept "Sees" Through Bubble Clouds
November 18, 2010 10:36 AM
Leighton and a dolphin
Twin inverted pulse sonar concept can detect targets through bubble clouds caused by breaking waves
University of Southampton
researchers have created an
underwater sonar device
capable of detecting objects through bubble clouds.
Professor Timothy Leighton, study leader from the University of Southampton's Institute of Sound and Vibration Research (ISVR), and his team, have developed a sonar device that can "see" through bubble clouds through the use of a new sonar concept.
Standard sonar devices already in use utilize differences between
and their echoes to identify objects such as wrecks, reefs, fish and submarines. But when it comes to bubble clouds, which are created mainly from breaking waves, these conventional sonar devices' sound becomes scattered and the sonar image is blurred.
"Cold war sonar was developed mainly for use in deep water where bubbles are not much of a problem, but many of today's applications involve shallow waters," said Leighton. "Better detection and classification of targets in bubbly waters are key goals of shallow-water sonar."
To remedy poor detection in bubbly waters, Leighton and his team created a
new sonar concept
called twin inverted pulse sonar (TWIPS). TWIPS dissects the way bubbles pulsate in sound fields, which is an act that influences the characteristics of sonar echoes.
TWIPS' design consists of trains of twinned pairs of sound pulses where the first pulse of each pair has a waveform that is an inverted duplicate of that of its twin. The first pulse is sent exactly a fraction of a second before its inverted duplicate. According to Leighton, this concept was inspired by dolphins.
"To catch prey, some dolphins make
in which the best man-made sonar would not work," said Leighton. "It occurred to me that either dolphins were blinding their sonar when making such nets, or else they have a better sonar system. There were no recordings of the type of sonar that dolphins use in bubble nets, so instead of producing a bio-inspired sonar by copying dolphin signals, I sat down and worked out what pulse I would use if I were a dolphin."
Leighton and his team have tested the TWIPS concept in a large testing tank as well as at sea on the University of Southampton's coastal research vessel, the RV
At sea, TWIPS was tested against conventional sonar when challenged to identify the seabed in Southampton Water, which ranges between 10 and 20 meters in depth.
"TWIPS outperformed standard sonar in the wake of large vessels such as passenger ferries," said Dr. Justin Dix, co-author of the study from the University of Southampton's School of Ocean and Earth Science (SOES).
Leighton and his team would like to see TWIPS used in harbor protection as well as an aid in the identification of marine sediments and manufacturing. Further research could lead to TWIPR (twin inverted pulse radar), which could be used to
or covert circuitry.
"This is about the Internet. Everything on the Internet is encrypted. This is not a BlackBerry-only issue. If they can't deal with the Internet, they should shut it off." -- RIM co-CEO Michael Lazaridis
New Portable Electronic Sensor Detects Explosives Better Than Canines
November 11, 2010, 2:03 PM
MIT Researchers Develop Fibers That Can Produce, Detect Sound
July 13, 2010, 7:26 PM
Improved Sonar and Stealth With The Same Nanotube?
June 14, 2010, 7:28 PM
New Cancer Fighting Technique Kills with Nanobubbles
February 8, 2010, 4:03 PM
PIQ ROBOTTM reveals its new artificial intelligence software
November 29, 2016, 12:59 AM
One more time - Happy Thanksgiving to Everyone Around the World
November 24, 2016, 4:00 AM
Google’s Smart Contact Lens Project gets halted for 2016
November 20, 2016, 7:00 AM
Cell Research Study shows African Americans have greater immune response to infection
November 10, 2016, 1:00 AM
UTHealth Clinical Trial Shows Progress Using Stem Cells to Treat Traumatic Brain Injury
November 8, 2016, 1:00 AM
Uber Partners with Circulation to Pilot Program Connecting Transportation and Digital Health Care
November 6, 2016, 5:00 AM
Most Popular Articles
Surface Pro 5 Rumors - New Release Date and Price
April 22, 2017, 6:45 AM
SAPPHIRE PULSE Radeon RX 580 8GD5 – Great Value for the Money
April 20, 2017, 7:47 AM
Apple Watch NikeLab Limited Edition unveiled.
April 22, 2017, 6:20 AM
Dell Inspiron 17 7000 – A Premium Laptop featuring 7th Gen Intel Core i7 in a 2-in-1 Frame.
April 19, 2017, 7:45 AM
Meet the Smartphone with four cameras - Alcatel Flashphone
April 5, 2017, 11:20 AM
Latest Blog Posts
Google Android App – Huge improvement on Nighttime Photography
Apr 27, 2017, 7:40 AM
Google Co-Founder, Sergey Brin has an Airship
Apr 26, 2017, 6:43 AM
Samsung Galaxy S8 and S8 Plus – Lots of Glass that Breaks Easily
Apr 25, 2017, 7:20 AM
Samsung Galaxy S8 – Warning for Pet Owners
Apr 24, 2017, 5:59 AM
Sound Bars and the Costs?
Apr 23, 2017, 6:30 AM
Link your Brain to Your Computer – In Four Years…Maybe
Apr 22, 2017, 7:03 AM
Google Home can now identify users by their voice.
Apr 21, 2017, 7:15 AM
Amazon Lex – Now Available for Developers.
Apr 20, 2017, 6:58 AM
You can now use Instagram offline on your Android Smartphone
Apr 19, 2017, 8:00 AM
Now you can livestream to YouTube from your mobile device.
Apr 18, 2017, 8:05 AM
Google Home – Is It a Spy Device?
Apr 17, 2017, 7:30 AM
Apple added to self –driving test permit list
Apr 15, 2017, 6:21 AM
Project Scorpio – Coming on June 11
Apr 14, 2017, 6:20 AM
Looks Like Samsung Has Been Forgiven.
Apr 13, 2017, 6:50 AM
United Airlines - Blasted on China’s Social Network and the Stock Market
Apr 12, 2017, 6:50 AM
Amazon's Third-Party Sellers Hacked
Apr 11, 2017, 6:25 AM
Microsoft Surface Pro5 Details Revealed
Apr 9, 2017, 6:41 AM
Own An Android Phone? Then you could be hacked over Wi-FI
Apr 7, 2017, 6:47 AM
Apple confirms iOS 10.3 bug and its effect on iCloud Services
Apr 6, 2017, 6:30 AM
Apple Rolls Out New Version of Apple Music
Apr 5, 2017, 10:35 AM
Apple in the News
Apr 4, 2017, 9:03 AM
Apple iPhones Will Soon Feature Graphics Chips Designed BY Apple
Apr 3, 2017, 6:23 AM
More Blog Posts
Copyright 2017 DailyTech LLC. -
Terms, Conditions & Privacy Information