Abstract
The electromagnetic scattering of ground objects always has important application value in remote sensing, detection, anti-stealth and other fields. Among them, vegetation has received extensive attention due to its wide variety and uneven distribution. With the expansion of the scene, the theoretical model of vegetation electromagnetic scattering becomes more and more complex, the calculation amount increases sharply, and the solution accuracy decreases. It is urgent to establish a full-wave simulation method that can accurately and fast analyze the electromagnetic scattering of vegetation. To solve this problem, this paper establishes a hybrid integral equation for solving the objects with thin dielectric sheets (TDS) and dielectric bodies, and calculates the electromagnetic scattering of large-area vegetation by simulating an infinite periodic scene. In addition, the periodic Green's function (PGF) is expanded by the multilevel periodic fast multipole algorithm (MLP-FMA), which further improves the computational efficiency. The method proposed in this paper provides model and theoretical support for the electromagnetic scattering simulation of actual large-scale vegetation scenes.
Published Version
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