An analysis of the problem of the effectiveness of weapons, not necessarily nuclear, against a nonuniform target system where there is both shot-to-shot and target-to-target variation. In 1968 the widely held Defense Intelligence Agency method for multiple attacks was found by Latter and Thomas to be inapplicable to the case of hardness variation, since its derivation was based on shot-to-shot variation rather than on target-to-target variation. In this memorandum, the DIA function is used to obtain a solution for the case of a combination of shot-to-shot and target-to-target variation. It agrees with the DIA solution for the case of one weapon or when target-to-target variation is made zero. Further, an approximate solution is obtained that agrees with that found by Latter and Thomas when the shot-to-shot variation is set equal to zero. 38 pp. Ref. (ETH)
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