Digital Twin System for Reflector Antenna Structure Performance Evaluation Based on Surrogate Model

The digital twin system of the reflector antenna based on the surrogate model is designed in this paper to achieve real-time evaluation of its structural performance during operation. Firstly, the finite element model of the reflector antenna is established, and mechanical performance data samples of the antenna structure are obtained. Secondly, using surrogate model technology, a high-precision Gaussian Process mathematical model is fitted to enable rapid and accurate prediction of the antenna structure's performance. Finally, data communication technology is utilized to connect the physical space of the antenna with its twin space, enabling visualization of its structure's performance and interaction with motion attitude based on the Unity engine. Through testing, it has been demonstrated that this digital twin system can achieve real-time monitoring of high precision and efficiency for the structural performance of the antenna.