Conduct Mission/Function Analysis

The mission/function analysis proceeds to a decomposition of functions to successively greater levels of detail based on requirements associated with for each function in the context of mission scenarios.

Requirements include: (1) information and knowledge requirements - what the system must know in order to complete the function, and characteristics of this information, such as source, accuracy, timeliness requirements, etc.; (2) performance requirements - performance criteria associated with the performance of functions and subfunctions; (3) decision requirements - decisions to be made in the completion of a function, options, and decision rules; and (4) support requirements - support needed by the system to enable successful completion of each function.