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A team of researchers at Vanderbilt University has developed two hardware modules along with corresponding software that uses an Android smartphone to spot the location of a nearby shooter.
The U.S. military has worked with the scientific community to develop systems to identify sniper locations for more than a decade. Pentagon leaders have already used at least two systems to track sniper fire — the Boomerang and Pilar acoustic sensor system.
These systems use the sound created by the muzzle blast and/or the shockwave created by the bullet traveling at supersonic velocities to triangulate the location of a shooter. In order to best locate a shooter, the systems depend on networks of sensors. A processor collects the readings from the different sensors in the area and determines the location.
Vanderbilt’s team has developed two modules of microphone sensors that can be connected to a smartphone. One is roughly the size of a pack of playing cards. It collects readings from both the muzzle blast and the shockwave to triangulate a location. For it to work, this version must have six nodes to get an accurate location, according to Akos Ledeczi, a member of Vanderbilt’s team.
The second module is slightly larger, but it only requires two people to have the module and collect data in order to gain a reading. The second version only collects data on the shockwave, and it can detect the direction of the shot as well as a general estimate of its range, Ledeczi said.
See full article on Military.com