Israel Rafael/Elta Trophy Active Protection System

The Active Protections System is a concept from the 80s. This kind of system detects and tracks an incoming ammunition like missile or shell. If the computed trajetory indicates a real threat then the system will deploy kinect countermeasure. All the process shall be really quick over a moving platform so the sensors, actuators shall have tight requirements.
The israeli version developed by Rafael and Elta is remarkable because of its capability of countering short range firing of RPG and because of its low risk of collateral damage to the nearby troop. And the Trophy Light will be employed not only for heavy but also for medium and light vehicles.

More: http://en.wikipedia.org/wiki/Trophy_active_protection_system