Application of FDTD algorithm to highway technology

Discusses the suitability of pulse radar for measuring the depth of asphalt above cement, ensuring a highway surface to be even. In order to simulate the behavior of such wide-band radar systems, a two-dimensional finite-difference time-domain (FDTD) algorithm is presented in this paper, which model...

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Bibliographic Details
Main Authors: Huaiying Tan, Kecheng Liu, Diannong Liang
Format: Conference Proceeding
Language:English
Subjects:
Asphalt
Electromagnetic scattering
Finite difference methods
Perfectly matched layers
Radar scattering
Reflection
Road transportation
Rough surfaces
Surface roughness
Time domain analysis
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Summary:Discusses the suitability of pulse radar for measuring the depth of asphalt above cement, ensuring a highway surface to be even. In order to simulate the behavior of such wide-band radar systems, a two-dimensional finite-difference time-domain (FDTD) algorithm is presented in this paper, which models the scattering problem from a stack of two rough interfaces. The two boundaries are separating three media: air, asphalt and cement. As shown through numerical solutions, this versatile tool is well suited for the investigation of physical phenomena, especially the competition between surface and subsurface scattering.
DOI:10.1109/ICIMW.2000.893020