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首页> 外文期刊>Geoscience and Remote Sensing, IEEE Transactions on >Generalization of PILE Method to the EM Scattering From Stratified Subsurface With Rough Interlayers: Application to the Detection of Debondings Within Pavement Structure
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Generalization of PILE Method to the EM Scattering From Stratified Subsurface With Rough Interlayers: Application to the Detection of Debondings Within Pavement Structure

机译：PILE方法对具有粗糙夹层的分层地下电磁散射的推广：在路面结构内脱胶检测中的应用

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摘要

This paper presents the numerical method, generalized propagation-inside-layer expansion (GPILE), to calculate the scattered electromagnetic field by any stratified 1-D medium composed of three random rough interfaces separating homogeneous media. GPILE is a generalization of the propagation-inside-layer expansion method, which considers only two interfaces. Both methods rely on the rigorous implementation of the Maxwell equations, with a simple matrix formulation and which have a straightforward physical interpretation. In particular, this method allows us to distinguish the primary echo of the upper surface and also the multiple echoes arising from the intermediate and lower interfaces. This method is applied in this paper to simulate the ground-penetrating radar (GPR) signal at nadir. The simulated signals are analyzed to study the sensitivity of the GPR signal to any material debonding within the pavement layered structure.
机译：本文提出了一种数值方法，即广义内层扩展（GPILE），用于计算由任何将均匀介质分开的三个随机粗糙界面组成的分层一维介质的散射电磁场。 GPILE是内部传播层扩展方法的概括，它仅考虑两个接口。两种方法都依赖于Maxwell方程的严格实现，具有简单的矩阵表示形式，并且具有简单的物理解释。特别地，这种方法使我们能够区分上表面的主要回波，以及中间和下界面产生的多重回波。本文将该方法用于模拟天底探地雷达信号。分析模拟信号以研究GPR信号对路面分层结构内任何材料脱粘的敏感性。

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