Abstract. Uncertainty is a large part of the Systems Engineering (SE) development process. Particularly absent is the quantification of uncertainty of the threat, operating environment, and friendly force factors at each step of this lifecycle. This paper will explore a methodology to quantify the amount of uncertainty and the interdependencies of the uncertainty factors during the development. Included for consideration are internal and external factors and their contribution to the overall system uncertainty. An illustrative example is provided to exercise this methodology.
During the course of developing system performance requirements, the requirements engineer often refers to the connectivity between external nodes of the system in question. This connectivity is often documented in an adjacency matrix, or N2 diagram, in order to show the one or two way connections between systems. However, there is no means to show preferential connectivity if the system had an option to connect with a different system during the course of the mission, and assess the impact of the overall performance based on the connection selected. This paper develops a means to describe and quantify the impact of the preferential connection on the final outcome through an illustrative example.
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