TY - JOUR T1 - A simple model for calculating ballistic missile defense effectiveness AU - Dean A. Wilkening PY - 2000 T2 - Science & Global Security SP - 183 EP - 215 VL - 8 IS - 2 N2 - This paper develops a probabilistic model that can be used to determine the technical performance required for a defense to meet specific political/military objectives. The defense objective is stated as a certain probability that no warheads leak through the defense. The technical performance is captured by the interceptor single-shot probability of kill and the warhead detection, tracking, and classification probability. Attacks are characterized by the number of warheads and undiscriminated decoys. Barrage and shoot-look-shoot firing modes are examined, with the optimal interceptor allocation derived for the shoot-look-shoot mode. Applications of this model for sizing national and theater missile ballistic missile defenses are discussed. UR - http://scienceandglobalsecurity.org/archive/sgs08wilkening.pdf 0