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Deterministic deconvolution for GPR data in t-f domain

Oikonomou Nikolaos, Vafeidis Antonios

Πλήρης Εγγραφή


URI: http://purl.tuc.gr/dl/dias/604C6780-4B72-4D4C-BA2E-A6A6796920CF
Έτος 2011
Τύπος Δημοσίευση σε Περιοδικό με Κριτές
Άδεια Χρήσης
Λεπτομέρειες
Βιβλιογραφική Αναφορά N. Economou and A. Vafidis, "Deterministic deconvolution for GPR data in the t-f domain", Near Surf. Geoph., vol. 9, no. 5, pp. 427-433, Oct. 2011. doi:10.3997/1873-0604.2011020 https://doi.org/10.3997/1873-0604.2011020
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Περίληψη

Deconvolution methods encounter difficulties in increasing the temporal resolution of GPR data due mainly to non-stationarity of the records. GPR wavelets are typically mixed phase, which is additionally a major failure of standard deconvolution methods. Here, we propose a deterministic deconvolution method for GPR data, implemented in the t-f domain, which utilizes narrow time windows and sets spectral balancing as a precondition. A reference wavelet is estimated experimentally for the calculation of a time varying deconvolution operator. Its phase variation is extracted from the spectrally balanced deconvolved GPR trace. The algorithm, tested on synthetic and real data, produces very promising results. In particular the deconvolved GPR section acquired over sands exhibits better temporal resolution and reveals reflected waves travelling through high loss media.

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