Application of instantaneous amplitude gradient for ground penetrating radar signal analyses |
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| Authors: | Tianlong Yan Jin Yang Zhaoping Liu Aimin Peng |
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| Institution: | 1.Key Laboratory of Geo-detection (China University of Geosciences, Beijing),Ministry of Education,Beijing,People’s Republic of China;2.School of Geophysics and Information Technology,China University of Geosciences (Beijing),Beijing,People’s Republic of China |
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| Abstract: | Ground penetrating radar (GPR) is an effective geophysical method for environmental and engineering exploration. However, significant background interference occurs around most work sites, which increases the difficulty of analyzing and interpreting GPR profiles. For time-distance profile analyses, more accurate results can be obtained using the instantaneous parameters of the analytic signals. In this study, these instantaneous parameters are extracted and compared using 1D model waveform and 2D model strong interference profiles. The results show that the instantaneous amplitude gradient effectively reflects the model information, even under strong interference. The instantaneous amplitude gradient is applied to GPR survey data from a study site, and the results indicate that the technique reflects the underground structure information of the survey area. Drilling verification further confirms that the instantaneous amplitude gradient accurately reflects the underground structure information. |
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