Conceptual Design, covers the development of the early (high-level) system requirements from identifying the program requirements to developing a well-written performance based specification, the Program Management Plan, and the System Engineering Management Plan.
Conceptual System Design starts the process to develop design requirements.
It covers the progressive development of consumer needs from early system (high-level) system requirements to documenting the program requirements through a well-written performance based specification, Program Management Plan, and System Engineering Management Plan.
The system engineering process generally starts with the identification of a "want" or "desire" or "need." Defining a problem may seem to be basic or obvious, but it may sometimes be the most difficult part of the process.
To have a good start and to minimize risks further down the process, a complete description of the problem should be presented in specific qualitative and quantitative terms. The description should be detailed enough to justify progressing to the next step. It is important that the results reflect true customer requirements.
Concentrate on defining the problem first; this should lead to a better definition of the true need.
