A Structured Analysis based process for developing C4ISR architectures is presented. The process demonstrates the feasibility of developing architecture descriptions that conform to the C4ISR Architecture Framework based on the Structured Analysis paradigm that underlies the concepts and definitions in the Framework. Furthermore, the process incorporates the derivation of an executable model that can reveal the logical, behavioral, and performance characteristics of the architecture. The

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... e process is illustrated through an example involving the insertion of a new technology in a large legacy system.