Abstract
From the perspective of the system of systems development, system-level functional testing is required for designing subsystems. This study utilizes modeling and simulation techniques to analyze the operational behaviors of the subsystems and confirm data communication between them. The targeted system in the study is a naval combat system (NCS), which is a typical type of defense cyber-physical system (CPS). Three types of models were designed for the simulation testing of the NCS: a combat-management model for simulating the overall computational activities, physical models to confirm the intrasubsystem behaviors, and data integration models to test the intersubsystem communications. These models are realized with the Model-View-ViewModel design pattern, which strongly facilitates graphical user interfaces being decoupled from model logic and data. We consider underwater combat scenarios as an application. Six significant physical subsystems within the NCS are simulated and tested: a ship-steering system, an inertial navigation system, a global navigation satellite system, a periscope, sonar systems, and a plotting board. We expect that the proposed work will play a principal role when analyzing the behaviors and communications of defense CPSs and providing an environment for functional testing as a digital twin.
Highlights
A military combat system is a type of maritime cyberphysical system (CPS) [1,2,3] that collects physical data through sensor subsystems [4]
We functionally classify CPS models that closely resemble the components of the real naval combat system (NCS). en, we develop a distributed simulation system to help with analyzing intrasubsystem behaviors and confirm the conversion of intersubsystem data
The data integration systems (DISs) is designed to act as a proxy for combat systems residing on the central data bus, which enhances interface compatibility. e DIS simulator verifies that the realized simulated model accurately reflects the authentic behavior of the real system to be tested. e primary role of the DIS simulator is to convert simulation data into a middleware data format
Summary
A military combat system is a type of maritime cyberphysical system (CPS) [1,2,3] that collects physical data through sensor subsystems [4]. E collective contribution of these studies has been to suggest meaningful modeling methods and simulation software for defense CPSs. Some researchers have proposed classification methods for CPS models [16,17,18,19], and others have developed simulation systems with diverse modeling languages [20,21,22]. Is study presents a practical simulation approach to testing defense CPSs, an NCS, at the subsystem level. Is separation between data and logic increases the transparency, modularity, and flexibility of the overall modeling, i.e., the external graphical interfaces and the internal model logic For this reason, the MVVM design pattern has been used widely to develop software for human-computer interaction (HCI) in many industrial fields [26, 27].
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