Parabolic Equation Modeling of Propagation over Terrain Using Digital Elevation Model

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ID: 21327
2018
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Abstract
The parabolic equation method based on digital elevation model (DEM) is applied on propagation predictions over irregular terrains. Starting from a parabolic approximation to the Helmholtz equation, a wide-angle parabolic equation is deduced under the assumption of forward propagation and the split-step Fourier transform algorithm is used to solve it. The application of DEM is extended to the Cartesian coordinate system and expected to provide a precise representation of a three-dimensional surface with high efficiency. In order to validate the accuracy, a perfectly conducting Gaussian terrain profile is simulated and the results are compared with the shift map. As a consequence, a good agreement is observed. Besides, another example is given to provide a theoretical basis and reference for DEM selection. The simulation results demonstrate that the prediction errors will be obvious only when the resolution of the DEM used is much larger than the range step in the PE method.
Reference Key
guan2018parabolicinternational Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Guan, Xiao-Wei;Guo, Li-Xin;Wang, Ya-Jiao;Li, Qing-Liang;
Journal international journal of antennas and propagation
Year 2018
DOI
DOI not found
URL
http://dx.doi.org/10.1155/2018/1878307
Keywords Keywords not found

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