Navigation Signal Propagation Characteristics Modeling Based on 3D Scene

A method for modeling navigation signal propagation characteristics is proposed. 3D modeling technology, electromagnetic theory and electromagnetic simulation technology are used to model the long-distance scene and the carrier platform of close-range navigation receiver respectively. On this basis, the propagation characteristics of navigation signal are modeled. The long-distance scene is dominated by occlusion and reflection, and the propagation characteristics of navigation signal are analyzed macroscopically, the short-distance scene is dominated by carrier platform, and the influence of carrier platform on the scattering characteristics of navigation signal is analyzed. the propagation characteristics of navigation signal in real scene are realized on the basis of the characteristics of multi-path, delay and frequency shift of navigation signal. The simulation results are validated by commercial software simulation, which provides a strong support for the navigation receiving terminal test.