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 -
Slaughterbot AI KIller Quadcopter Drones
'The real border was defended by... a swarm of quasi-independent aerostats.' - Neal Stephenson, 1995.
Russia Working On Military Exoskeletons
'...you look like a big steel gorilla...' - Robert Heinlein, 1959.
TALOS Exoskeleton Development Proceeding
'Suited up, you look like a big steel gorilla...' - Robert Heinlein, 1959.
Britney Spears And Lynn Minmay - Weapons Of Choice
An attack can take many forms.
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.
Save Your Brain's Connectome, Upload Yourself Elsewhere
'You've got remote storage. How regular is the update?'
TMS Decreases Belief In God, Increases Belief In Immigrants
'... setting up the same currents, the same basic ideas, in them all.'
Loomo Mini Transporter Robot Companion You Ride On
'Slowly the [robot] horse raised its head, wiggled its ears, blinked twice, gave a tentative whinny.'
Soft Robotics - Now With 3D Printed Sensors!
'A series of chemelectric afferent nerve-analogues, which permitted it to gauge to an ounce the amount of pressure necessary to snap a bone...'
AI Tool Lynx Insight And The Cybernetic Newsroom
'The structure,... was once a great homeostatic newspaper, the New York Times. It printed itself directly below us...'
Espresso Telescope Searches For Exoplanets
'These instruments were the wonderful ones our astronomers had perfected.'
Dune Fans! Metal-Organic Frameworks Make Science Fiction Real
'Dew collectors,' he muttered, enchanted by the simple beauty of such a scheme.
Manned Maneuvering Unit From 1984
'The glittering little rocket bolted to the black iron behind him.'
Astronaut Gets Younger In Space
'So what we're looking for now is not an antibiotic - an anti-life drug - but an anti-agathic, an anti-death drug...'
Blockchain Used To Verify Election Results
'Any adult could punch into the phone his or her code, followed by a yes or no.'
IJOP Integrated Joint Operations Platform China's Minority Report?
'All day long the idiots babbled, imprisoned in their special high-backed chairs...'
HushMe Bluetooth Device Reinvents The Hush-A-Phone
'Talking into a hush-a-phone which he had plugged into the telephone jack...'
Ultrathin Brain Needle Developed At MIT
Putting drugs into a selected cubic millimeter within the living brain.
Tesla Semi Truck Now At Work
Why wait? Tesla Semi now hard at work.
Illustris: The Next Generation Of Universe Simulation
'This digital device was ... A machine able literally to contain the Universe Itself...'
Scaly Yet Soft Robotic Snake
Love those robotic sneks.
More SF in the News Stories
More Beyond Technovelgy science news stories