Application of a DoDAF Total-Ship System Architecture in Building Naval Ship Operational Effectiveness Models

The Naval Ship Design Concept and Requirements Exploration (C&RE) process used at Virginia Tech is based on a Multi-Objective Optimization approach that explores the design space to produce a Non-Dominated set of ship design solutions ranked by cost, risk, and effectiveness. The current method of calculating an Overall Measure of Effectiveness (OMOE) used in this process is based on expert opinion and pairwise comparison. Despite the good results obtained using expert opinion, more direct physicsbased Operational Effectiveness Models (OEMs) starting with a detailed Design Reference Mission (DRM) including mission Operational Situations (OpSits), conditions, and measures may provide greater confidence in the validity of the results and a perception that results are more unbiased and rational. This paper continues with the description of a new methodology introduced by Kerns, Brown and Woodward for building a DRM and ultimately an OMOE using a total-ship system architecture and the DoD Architecture Framework (DoDAF 2.0). It describes the application of this DRM and architecture to develop related Operational Effectiveness Models (OEMs) and complete the new OMOE as an alternative to the current expert opinion-based OMOE. OEMs are developed for multiple discrete event operational situations based on the DRM/OpSit framework developed in the operational domain of the ship system architecture. The scope of these OEMs is determined in the architecture. The complexity is determined primarily in the simulations themselves. Each mission may have multiple OpSits to describe the typical operations of that mission, but this paper considers only one OpSit per mission area for simplicity. Each mission has a measure of effectiveness (MOE) based on its OpSit measure results. The resulting mission area MOEs are combined to form the OMOE. A US Coast Guard (USCG) Offshore Patrol Vessel (OPV) is used as a case study in our research. The ship design architecture and Design Reference Mission are based on the OPV mission requirements, and the Drug Interdiction OpSit is used as a specific example in this paper.