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7).
1.2.2 Systems Engineering Processes
The SIMILAR process model [1] provides a good overview of a systems engineering
process. The name is an abbreviation that stands for
?–  S tate the problem
?–  I nvestigate alternatives
?–  M odel system
?–  I ntegrate
?–  L aunch the system
?–  A ssess performance
?–  R e-evaluate
The following subsections briefl y describe these tasks.
State the problem
At the beginning of a system development project there is a description of the
tasks involved. A good solution can be found only provided that the task is well
formulated. Errors in this phase can become very costly, in terms of both money and
image. A task should define what the system is to perform, or which requirements
it is to meet. A systems engineer deals with requirements on the system level.
The requirement model does not describe the solution. If it did it would hinder
us from evaluating alternative solutions.
3 Development of the system ??? new office. ???
11
Investigate alternatives
One of the important tasks of a systems engineer is to investigate and weigh alternative
concepts.


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