1. A method for extrapolating the point of origin of a projectile, the method comprising: receiving data about a target from a radar; classifying said target by performing a first discriminant function analysis of said received data; performing a second discriminant function analysis of the analyzed data to create a first output comprising information about said radar target, wherein said second discriminant function is only performed if said first discriminant function classifies said target as a projectile; calculating at least a first value of said projectile by performing a first Kalman filter algorithm using at least the data from said second discriminant function analysis; performing a third discriminant function analysis of said at least a first value of said projectile to create a second output; performing a second Kalman filter algorithm using at least said first value of said projectile to create a third output; and using said third output to extrapolate a point of origin of said target.