The Effect Ricker Wavelet of Duty Cycle Adjustment on GPR Detection Result

Ramadhan, Aditya Rifky; Ali, Erfansyah; Pramudita, Aloysius Adya

doi:10.25124/jmecs.v8i1.2872

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B Construction Of the Dictionary {H1

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2023

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“…First, we recall the expression of the Ricker wavelet which is the transmitted signal by the GPR [39], [40]:…”

Section: B Construction Of the Dictionary {Hmentioning

confidence: 99%

New Robust Sparse Convolutional Coding Inversion Algorithm for Ground Penetrating Radar Images

Gallet

Mian

Ginolhac

et al. 2023

IEEE Trans. Geosci. Remote Sensing

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In this paper, we propose two algorithms to enhance the interpretability of the hyperbola in B-scans obtained with a Ground Penetrating Radar (GPR). These hyperbolas are the responses of buried objects or cavities. To correctly detect and classify them, a denoising is typically necessary for GPR images as the signal-to-noise ratio is low, and the various interfaces naturally present in the earth have a strong response. Both algorithms are based on a sparse convolutional coding model plus a low rank component. It is solved through an Alternating Direction Method of Multipliers (ADMM) framework. In order to take into account the presence of outliers and the artifacts caused by the acquisition, the second algorithm is based on the Huber norm instead of the classic L2-norm. These algorithms are tested on a real dataset labeled by geophysicists. The results show the denoising efficiency of this approach, and in particular the robustness of the second algorithm.

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“…First, we recall the expression of the Ricker wavelet which is the transmitted signal by the GPR [39], [40]:…”

Section: B Construction Of the Dictionary {Hmentioning

confidence: 99%