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In civil engineering, ground penetrating radar is widely used to assess the roadway structures. This study evaluates the influence of interface roughness. A modified estimation of signal parameters by rotational invariance techniques algorithm is proposed with a spectral smoothing technique for efficiently estimating the time delay, the permittivity of the layers and the interface roughness. To reduce...
When the ground-penetrating radar (GPR) is used as a non-destructive testing method in the field of civil engineering, the thickness of the mediums can be deduced from radar profiles by echo detection, which provides the time-delay estimation (TDE) associated with each interface. In order to improve the performance of TDE, this paper proposes a new technique based on maximum likelihood principle for...
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