Real-time acquisition and tracking of sniper bullets using multi-sensor multi-frequency radar techniques

Real-time acquisition and tracking of sniper bullet trajectory is important in various military operations. While the majority of the existing work on gunshot is based on acoustic sensors, such technologies cannot provide timely response because sound propagates much slower than a bullet does. In this paper, we propose the use of an array processing framework that uses multi-frequency continuous-wave (CW) radio frequency (RF) signals to enable robust real-time tracking of the direction as well as the range of a bullet for accurate trajectory tracking. The proposed technique will effectively lead to the reduction of injuries and casualties as well as fast response in military operations as a result of providing individual soldiers with the sub-time-of-flight tracking capability for rapidly determining the location of threats.