Abstract: To deal with the low precision of the UAV model in the process of combat simulation, the difficulty of virtualreality interactive operation, and the weak combat experience of commanders, the design scheme of the combat simulation system is proposed based on virtual twin technology, which is used for synchronous operation of actual UAV combat and simulation/deduction, and outputting intelligent assisted decision-making according to the battlefield situation. On the basis of digital twin, the connotation of virtual twin technology is proposed. Combined with the advanced means of artificial intelligence, the framework of virtual twin system for UAV combat is designed. Finally, taking the combat process of individual combat quadrotor UAV as an example, the hardware and software architecture is designed, and the operation process is analyzed. The case study findings shows that the model under the virtual twin system runs more accurately, and can realize the virtual-reality synchronization, interactive operation, visual interface and intelligent decision-making real-time output, so that the commander's sense of participation is enhanced, and the combat command efficiency is improved.

Key words: patternrecognitionandintelligentsystem, virtualtwin, UAV, combat, artificialintelligence