This system is disigned originally to provide warning to a pilot of a rotary wing aircraft that they are under small arms fire and indicates the direction from which that fire originated. However it can be also fitted to a vehicle for vehicle protection, this system is more compact for use on a vehicle. The system calculates the set of bullet velocity vectors which thus shows the direction of the source of the possible hostile fire. On receipt of an indication the pilot would normally be able to take avoiding action and minimise the danger of a subsequent direct hit. It comprises of three basic units, the Array, the Computer Unit and the Indicator Unit

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