Design Of Military Sandbox Interactive System Based On Augmented Reality

Military sand table is an important tool for executing operational command tasks and conducting military simulations for battle commanders.Traditional physical military sand tables cannot fully display battlefield information,while new electronic sand tables can present information fully but have complex operation issues.Based on augmented reality,military sand tables can intuitively and systematically present battlefield information and have simple and convenient operation,meeting the needs of modern informationized joint operations for sand tables.Using the example of the Sino-US carrier battle group combat simulation,the augmented reality military sand table interactive system(ARMSIS)analyzes the composition and operational process of the carrier battle group through literature review,conducts requirement analysis for the AR military sand table interactive system,and identifies four aspects of ARMSIS system requirements:information reality,data-driven,collaborative work,and human-computer interaction.By analyzing the ARMSIS system requirements,designing system functional modules,constructing human-computer interaction processes,dividing the sand table into model area,combat area,and operational area,analyzing the interaction processes of the system preparation stage and enhancement stage,and designing a general implementation plan for the system.Using 3DsMax to construct 3D models of aircraft carriers,warships,and carrier-based aircraft in the augmented reality military sand table interactive system;using UE4 virtual engine to build AR scenes,writing target image recognition,image tracking,and virtual model generation blueprints through UE4 blueprint editor function to achieve the function of displaying virtual models and operational information by recognizing entity models in the sand table.Building a system interaction blueprint,including interactive functions such as model scaling and model rotation,recognizing model position information through cameras,and transmitting information to the UE4 simulation system through Socket information interface to achieve the function of multi-person collaborative operation of the sand table.Based on the human body’s sitting and standing active space range,design the dimensions of the AR military sand table chassis and various entity models,and produce sand table entity models.Based on the characteristics of augmented reality interaction interface,design interaction interface content,including interface element design,interface information design,interface hierarchy design.Taking fighter aircraft as an example,demonstrating the design of the interactive system.Using heuristic evaluation method to design ARMSIS questionnaire,which mainly includes four aspects:basic information of survey objects,system interface design,system interaction process,and expert opinions.Inviting 10 experts to fill in the questionnaire,the questionnaire results show that the system has good usability.Using user testing method to evaluate the usability of the system.Testing score is 77.5 points through SUS system usability scale testing.The usability evaluation is good,which verifies the usability of ARMSIS.The military sand table interactive system not only meets the portability requirements of command personnel for sand table simulations but also improves real-time display function of sand table simulation situation information.Based on augmented reality technology,military sand table interactive systems provide theoretical and practical ideas for improving sand table simulation efficiency,multi-person collaborative operation,and battlefield situation information display,promoting the development of military sand tables.