This thesis develops a systematic approach to exploring the response of a missile flyout software simulation to input noise. The research is intended to augment the current characterization tests employed by the Electronic Warfare Testing community. This thesis explores the direct relationship between specific input noise signals and individual simulation responses. The design defines an approach for characterizing the behavior of a deterministic simulation of tremendous complexity by controlling test conditions. Techniques for generating realistic random noise are derived. A statistical model of the relationship between input noise missile miss distance at the point of closest approach is presented. The statistical model coefficients are tested for validity. The techniques used are of general applicability to future missile simulation studies