New Dolphin-Inspired Sonar Concept "Sees" Through Bubble Clouds
November 18, 2010 10:36 AM
comment(s) - last by
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 article is over a month old, voting and posting comments is disabled
RE: Why not just learn from nature?
11/19/2010 11:29:00 AM
I, for one, welcome our bubbly Dolphin overlords of the future!
"The whole principle [of censorship] is wrong. It's like demanding that grown men live on skim milk because the baby can't have steak." -- Robert Heinlein
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
Smartphone STD Scanner Dongle Can Detect HIV in Just 15 Minutes
February 26, 2015, 11:04 AM
Bill Gates Plugs GMOs to Reduce Starvation in Africa
February 24, 2015, 10:12 PM
Cool Nature Video: Crazy Coconut Octopus Braves Dry Land to Capture Crab
February 24, 2015, 4:18 PM
MIT Creates Injectable Self-Healing Nanoparticle Hydrogel for Cancer Treatment
February 23, 2015, 9:37 AM
Amp EVs' Workhorse and HorseFly Duo Challenge Amazon to Delivery Drone Duel
February 20, 2015, 3:56 AM
DARPA Awards Boeing Contract to Test Jet Based Satellite Launches
February 19, 2015, 11:30 AM
Most Popular Articles
Modern Glass (Windows 7 Aero Glass + Modern UI) Style is Coming to Windows 10
February 19, 2015, 1:05 PM
Amid Tight Race w/ Evernote, Microsoft's OneNote Goes (Even More) Free, Adds Fresh Features
February 23, 2015, 11:15 AM
Google Steps up Snub of Adobe Flash, Auto-Converting Flash Ads to HTML5
February 25, 2015, 6:16 PM
NVIDIA Bows to Outraged Overclockers, Will Restore Feature in Upcoming Driver
February 23, 2015, 12:30 PM
HTC's Sense UI is Garbage: A Tale of Disappearing Keyboards and Desperate Fixes
February 24, 2015, 11:00 AM
Latest Blog Posts
Sceptre Airs 27", 120 Hz. 1080p Monitor/HDTV w/ 5 ms Response Time for $220
Dec 3, 2014, 10:32 PM
Costco Gives Employees Thanksgiving Off; Wal-Mart Leads "Black Thursday" Charge
Oct 29, 2014, 9:57 PM
"Bear Selfies" Fad Could Turn Deadly, Warn Nevada Wildlife Officials
Oct 28, 2014, 12:00 PM
The Surface Mini That Was Never Released Gets "Hands On" Treatment
Sep 26, 2014, 8:22 AM
ISIS Imposes Ban on Teaching Evolution in Iraq
Sep 17, 2014, 5:22 PM
More Blog Posts
Copyright 2015 DailyTech LLC. -
Terms, Conditions & Privacy Information