| Title |
FEM-PE Analysis with Transparent Boundary Condition based on the Averaged Vertical Wave Number |
| Authors |
안성진(Sung-Jin Ahn) ; 김종영(Jong-Young Kim) ; 권경일(Kyung-Il Kwon) ; 조용희(Yong-Heui Cho) ; 정용식(Yong-Seek Chung) |
| DOI |
https://doi.org/10.5573/ieie.2025.62.1.13 |
| Keywords |
Wave propagation; Finite element method; Transparent boundary condition; Refractivity index |
| Abstract |
This paper analyzes radio wave propagation in large-scale domain with complex terrain features and refractive indices, and proposes a Transparent Boundary Condition(TBC)-based Finite Element Method Parabolic Equation to handle boundary conditions in a novel way. The proposed boundary condition handling technique extracts the electromagnetic field strength at nodes near the upper boundary of the region of interest, and processes TBC by estimating the vertical wave number based on the relationship between the extracted field strengths, effectively eliminating reflected waves. Additionally, the refractive index was modeled using real measurement data obtained from domestic radiosonde observations, and a comparison with existing propagation analysis methods in the modeled atmospheric environment demonstrated that the proposed method outperforms traditional methods in terms of computational efficiency. |