Design and Optimization of Antenna Structure Based on Digital Twin

To develop the system construction of civil aviation digital analysis technology, and totally understand the charactersitics of signal synthesis of antenna as well as antenna signal in the external field. Firstly, according to the field antenna radiation system of typical ATC navigation equipment, the digital model is established and the virtual space signal has been analysised systematically. Secondly, optimized antenna radiation characteristics parameters, signal quality verification and development innovation by antenna directivity design, which is one of the methods to change the radiation field pattern of antenna array. The digital model of research mainly includes establishment of a series of localozer antenna array system database, reesarch of signal coverage characteristic, spatial modulation analysis, performance verification of anti-interference and data analysis methods. According to the radiation performance of the radiated antennas models, a kind of optimized antenna array is simulated by design inspiraiton of the high gain antenna. The analysis result shows that the new designed antenna system has good coverage characteristics and stronger anti-interference ability, at the same time, this makes up for the wide aperture defects of the current widely used antenna array after industrialization. This design idea also can be applied to other kinds of communicaiton antennas, providing an effective method for improving spatial siganl.