Helmet-Based Sniper Location System
A network consisting of helmet-based smart nodes can provide a platoon of soldiers with a 3D map of enemy shooters. Wireless links between helmets coordinate acoustic gunshot signature information collected by helmet microphones.
(Breadboard sniper locator system on Kevlar helmet)
Retired U.S. Army Lieutenant Colonel Albert Sciarretta, who assesses new military technologies in urban environments for DARPA, is one of the experts who is impressed by the ISIS system: “It’s strong points are that it isn’t limited to locating shots fired in direct line-of-sight, it can pick up multiple shooters at the same time, and it can identify the caliber and type of weapon that is being fired.”
When a high-powered rifle is fired, it produces two different kinds of sound waves. One is the “muzzle blast” that expands outward in a spherical wave from the muzzle. The second is a conical shock wave that is produced by the bullet as it travels at supersonic speeds. Each node of the shooter location system contains an array of four sensitive microphones. If at least three of the microphones in a single node detect the muzzle blast, the information allows the nodes’ microprocessor to calculate the direction that the sound came from. If the same array also detects the arrival time and angle of the bullet shockwave, a simple calculation gives the shooter’s location.
“Because the microphones on the helmet are so close together, the precision is not very high,” Ledeczi says. “However, the nodes are continuously exchanging the times and angles of arrival for these acoustic signals, along with their own locations and orientations. When two or more nodes detect the shot, they can provide the bearing with better than one degree accuracy. The range is typically within a few meters even from as far as 300 meters. The more sensors that pick up the shot, the more accurate the localization.”
The system can even identify the window from which a sniper is firing, even if the sniper is well inside the building at the time.
(Shooter localization system diagram)
In his excellent 2007 book Quantico, Greg Bear writes about a weapon sound tracker. Use the link below to read Bear's comments about his idea.
Sound trackers on the roof could zero in on weapons action and coordinate return fire through UAVs and their only other air support, the Superhawk.
(Read more about Bear's Weapon Sound Tracker)
A final advantage to the real-life helmet-based sniper location system is the cost. Other shooter location systems cost from $10K to $50K per unit and are quite bulky. The new system weighs just a bit more than the 4 AA batteries that power it and can be made for about $1K.
From Vanderbilt University via Next Big Future.
Scroll down for more stories in the same category. (Story submitted 3/26/2009)
Follow this kind of news @Technovelgy.
| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |
you like to contribute a story tip?
Get the URL of the story, and the related sf author, and add
Comment/Join discussion ( 1 )
Related News Stories -
Britney Spears And Lynn Minmay - Weapons Of Choice
An attack can take many forms.
DARPA's Warrior Web
'Earth's scientists solved the problem to some extent by devising rigid metallic clothing not unlike armor...'- Edmond Hamilton, 1932.
What Camouflage Pattern Is Best?
If you can't see it, you're making progress.
UrbanSim Counterinsurgency Training App
'Why simulation?' 'He's beginning to do things I didn't anticipate.'
Technovelgy (that's tech-novel-gee!)
is devoted to the creative science inventions and ideas of sf authors. Look for
the Invention Category that interests
you, the Glossary, the Invention
Timeline, or see what's New.
Matrix Sentinel Ancestor, The Pipe Inspector Robot From Krakow
Watch out, Keanu!
Auto-Focus Smart Glasses Have Liquid Lenses
'Hufhuf oil held in static tension by an enclosing force field within a viewing tube...'
Robotic Physician Assistant Has Steady 'Hands'
'You turned the screws below and the prongs moved... with caliper slowness, minuteness and precision.'
Roboy 3DPrinted Humanoid Robot
'A robot child that would be reared within the bosom of a human family...'
Robird Flapping Wing Drones Keep Airports Safe
'Mitch heard a rasping, flacketing buzz, like a big insect...'
3D Printed Fashion - Plastirobes And Transdresses
'... dial a new fashion every day!'
Robotic Lawn Mower Powered By Sun, Arduino
'The mower reached the edge of the lawn, clucked to itself like a contented hen...'
Google Perfects 'Blade Runner-style' Photo Details
'Pull back... stop... enhance 57-19...'
Pokerbot Libratus Learns To Lie (Bluff)
'Lying's a vital part of your psychological defense system - you're naked without it!'
Otto Autonomous Robot Trucks Run Into... Legal Snag
'They were automatic trucks such as are used for making deliveries...'
Tiny Drones With Sticky Feet Pollinate Flowers Now
'The Scarab rubbed its hind legs together...'
ThreeForm 3D Scans And Digitally Simulates Customer Fashion
'...A miracle of misapplied engineering caused his own face to appear on the illustrated figures dressed in trooper red.'
CloudFisher - Moroccan Fog Farmers Harvest Moisture From The Air
'That moisture trickles down...'
Piaggio Gita Personal Robot Porter
'Carry his bag... and follow him faithfully...'
Ardu McDuino, Bagpipe Robot
'Rollo sat at the keyboard, prim, inhuman, rigid, twin lenses focused...'
Not Quite Self-Replicating Robots, Franka Emika
'... it shares with mankind the ability to propagate.'
More SF in the News Stories
More Beyond Technovelgy science news stories