Portable system, which is being developed at the Institute Vanderbilt commissioned by the South American defense agency DARPA, conceptually is not anything new. It is referred to as passive acoustics, which is the difference in it reaches the microphone detects the sound of the shot its position in space.
This principle works system RedOwl, which we were in charge in the article "Before the first shot." But the developers want the first time to make a similar system of portable, personalized to each soldier, and to connect an array of field systems into a single network, exchange information and associated with a GPS-navigators. And it is — a very different level of modern weapons.
It is reported that each such system is applied 4 microphones, mounted on a helmet, and a means for communication of radio waves will be networked, built on technology-based ZigBee. The network will allow the detection system to rely on the data acquired is not a single sensor, and the whole mass, which not only expand the search area, and will make up work is much clearer.
"If you just fix the microphones on the helmet, they will be close to each other, and the detection accuracy is not sufficiently high, — says the head of the development team Akos Ledec (Akos Ledeczi), — But the interchange of information between the nodes of the network makes the whole system much more efficient, taking into account the data coming from different fighter, taking into account their mutual arrangement and orientation in space. Quite the data from the 2- fighter, To find out the direction of the shot up more degrees, and the mean (for normal conditions) to locate a sniper with a precision of a few meters. "
Means of Bluetooth-connection system is talking with a handheld computer fighter, which previously loaded satellite images and maps of the battle area, so that the place where a sniper had taken refuge, there will also be displayed. Naturally system signal analysis techniques have the advantage that a sound corresponding to the shot of a strong sniper rifle, among a host of other noises in the impending battle — first, to distinguish them from automatic gunfire.
The main problem with that as long as developers face is the need to track down the correct position of all the fighter, whose systems are combined into a single network. Accuracy, which is accessible via GPS, is not enough, well, a certain criteria — for example, in the town — it is also not so reliable. Engineers had to equip every soldier to the same tiny radio with analyzer which, Commending the interfering signals from radio beacons on the battlefield, allows for much more precisely understand the position of a fighter.
Such a principle is a realization of the Pentagon's latest concept aimed at creating a system of sensors for battlefield organized on the principle of "smart dust» (smart-dust). In other words — a lot of a cheap and small "nodes" in a network of self-organizing, in general, lot more efficient and reliable than single complex system.
Indeed, the modern sniper detection systems cost between 10 to 50 thousand U.S. dollars, whereas, according to the developers, each node in their proposed network system would cost about a thousand.
In general, any speakers suffer one major drawback: they can find a sniper just after he shot. Meanwhile, there is another approach, which from time to time may allow even neutralize the shooter before he would strike — from the reflected light of his optics. Read all about it, "Hunter Hunted".