Abstract
Trade studies have become an indispensable engineering activity and are used often in the early stage of system architecture development. Trade studies not only help when choosing the most balanced alternative, but are also essential in highlighting the most influential aspects of the system. Trade studies in highly sophisticated systems are often very complex. Therefore, given these complexities, we proposed a new trade study process for the system of systems architecture developed in Unified Architecture Framework models. This process supports automated methods that allow for greater accuracy, better uncertainty analysis, and accelerated analysis of alternatives. One of the essential and challenging stages of the proposed trade study process is a thorough evaluation of plausible alternatives, referred to as the Deep Check. The goal of this stage is to identify the most balanced alternative by evaluating those that are plausible against established evaluation criteria. This paper introduces a new approach to evaluate the system of systems architectures within a trade study process using automated methods in a model-based system engineering environment. We verified the proposed method by running an experiment on a real-world model to confirm its eligibility.
Highlights
A trade study is an evaluation of alternatives based upon criteria and systematic analysis to select the most balanced alternative to attain the objectives desired
2) EVALUATION ALGORITHM FOR TRADE STUDY ANALYSIS A trade study is an iterative analysis in which the scores of each pair of criteria and the values of the alternative obtained are calculated separately
Analytic Hierarchy Process (AHP) was chosen for the following reasons: (1) it considers the relative priorities of factors or alternatives and represents the best alternative, and (2) it provides a simple and very flexible model for a particular problem
Summary
A trade study is an evaluation of alternatives based upon criteria and systematic analysis to select the most balanced alternative to attain the objectives desired. Potential solutions for a trade study are judged by their satisfaction overall with a series of desirable characteristics [2], [3]. In sophisticated systems or system of systems (SoS) design, a trade study is often very complex, with engineering details that approach the actual design process in some areas [4]. Several architecture frameworks are used widely for SoS today, such as the NATO Architecture Framework (NAF) [5], [6], Department of Defense Architecture Framework (DoDAF) [7]–[9], or Unified Architecture Framework (UAF) [10]–[13].
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