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Employing CEEMD for Improving GPR Images - A Case Study from a Neolithic Settlement in Thessaly, Greece
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 8th Congress of the Balkan Geophysical Society, Oct 2015, Volume 2015, p.1 - 5
Abstract
In this study we apply Complete Ensemble Empirical Mode Decomposition on several GPR lines derived from a survey at Magoula Almyriotiki, a Neolithic settlement in Thessaly, Greece where buried structures are identified but are obscured by noise. The workflow we followed consists of a preprocess step (time zero, dewow, gain and background removal) followed by decomposition with CEEMD. The modes that exhibit less noise and at the same time gather all the reflections from the buried houses, were the third and the fifth IMF. Their summation was then used to calculate instantaneous envelope and to extract slices. From the obtained results the images are significantly improved highlighting further details of the buried antiquities, suggesting that CEEMD is a promising tool for processing GPR data when combined with standard filters and corrections.