Automatic detection of multiple pavement layers based on the cosine of instantaneous phase of ground penetrating radar data

ZHOU Dong; LIU Mao-Mao; LIU Zong-Hui; LIU Bao-Dong

doi:10.11720/wtyht.2022.1363

2022 Vol. 46, No. 4

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Article navigation > Geophysical and Geochemical Exploration > 2022 > 46(4): 961-967

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ZHOU Dong, LIU Mao-Mao, LIU Zong-Hui, LIU Bao-Dong. 2022. Automatic detection of multiple pavement layers based on the cosine of instantaneous phase of ground penetrating radar data. Geophysical and Geochemical Exploration, 46(4): 961-967. doi: 10.11720/wtyht.2022.1363

Citation:

ZHOU Dong, LIU Mao-Mao, LIU Zong-Hui, LIU Bao-Dong. 2022. Automatic detection of multiple pavement layers based on the cosine of instantaneous phase of ground penetrating radar data. Geophysical and Geochemical Exploration, 46(4): 961-967. doi: 10.11720/wtyht.2022.1363

Automatic detection of multiple pavement layers based on the cosine of instantaneous phase of ground penetrating radar data

1. School of Civil Engineering and Architecture,Guangxi University,Nanning 530004,China；
2. Guangxi Key Laboratory of Disaster Prevention and Engineering Safety,Guangxi University,Nanning 530004,China；
3. Nanning Pipe Gallery Construction Investment Co.,Ltd.,Nanning 530219,China

Received Date: 20 July 2021

Revised Date: 20 August 2022

Publish Date: 17 August 2022

Abstract

Abstract

Horizon characteristics are important information in pavement detection using ground penetrating radar (GPR) data.However,current horizon picking methods based on manual work or related algorithms have problems such as strong subjectivity and heavy workload and they can only track one horizon each time.Therefore,this study proposed a multi-layer auto-tracking method based on the cosine of the instantaneous phase of GPR data.The specific steps of this method are as follows.Firstly,obtain the cosine of the instantaneous phase of GPR data through complex signal analysis.Secondly,carry out the correlation analysis of wavelet cosine matrix data and then calculate the cosine of the instantaneous phase of these data,aiming to enhance the transverse continuity of phase data along the cophase axis.Thirdly,obtain the spatial positions,amplitude,and polarity of the phase data,and automatically track the transversely continuous horizon lines under a series of constraints such as signal amplitude and cophase axis characteristics.Finally,determine the horizon data and their polarity by comparing the RMS values of the amplitude of adjacent horizon lines along the depth direction,and extract the horizon line data with continuous high amplitude by setting horizon and amplitude thresholds.Numerical simulation and field case analysis have verified the effectiveness and adaptability of the method proposed in this study.
- ground penetrating radar /
- complex signal analysis /
- highway pavement /
- horizon automatic

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References

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