Characterization and mitigation of air-coupled GPR antenna vibration during traffic-speed estimation of asphalt pavement dielectric constant

IF 5.5 2区工程技术 Q1 ENGINEERING, CIVIL

Transportation Geotechnics Pub Date : 2025-08-05 DOI:10.1016/j.trgeo.2025.101656

Siqi Wang , Guodong Liu , Ming Cai , Tao Ma , Zhen Leng , Xue Luo , Zhiqiang Cheng , Junqing Zhu , Xin Sui , Xu Wu , Shengjia Xie

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引用次数: 0

Abstract

Accurate prediction of the dielectric constant is essential for asphalt pavement layer thickness and density estimations using air-coupled ground-penetrating radar (GPR) antennas. However, antenna vibrations during continuous dielectric constant profiling introduce noise, causing inaccurate predictions. The existing method only smooths the profile without analyzing the air-coupled antenna’s transmitter and receiver vibration mechanisms. Precise transmitter and receiver movements are challenging to quantify for commercialized antenna models. This study investigates different dimensions of antenna movements during continuous dielectric constant profiling using GPR to assess the effect of vibrations on prediction accuracy. The simulation model was built to reconstruct the antenna vibrations at different dimensions. A signal filtering method was proposed to attenuate the vibration effect in the dielectric constant profile based on the frequency domain features. Prediction errors drop from 4.65 % to 2.83 % at various speeds using the proposed method. The outcome of this study could allow robust and automatic attenuation of antenna vibration during traffic-speed GPR surveys.

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沥青路面介电常数交通速度估计过程中空气耦合探地雷达天线振动的表征与抑制

在利用空气耦合探地雷达天线估算沥青路面厚度和密度时，准确预测介电常数是至关重要的。然而，天线振动在连续的介电常数剖面引入噪声，导致不准确的预测。现有的方法只是平滑轮廓，没有分析空气耦合天线的发射和接收振动机理。对于商业化的天线模型来说，精确的发射机和接收机运动是难以量化的。本研究利用探地雷达研究了连续介质常数剖面中天线运动的不同维度，以评估振动对预测精度的影响。建立仿真模型，重建天线在不同维数下的振动。提出了一种基于频域特征的信号滤波方法来衰减介电常数剖面中的振动效应。在不同速度下，预测误差从4.65%降至2.83%。这项研究的结果可以在交通速度GPR调查期间实现天线振动的鲁棒和自动衰减。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Transportation Geotechnics Social Sciences-Transportation

CiteScore

8.10

自引率

11.30%

发文量

194

审稿时长

51 days

期刊介绍： Transportation Geotechnics is a journal dedicated to publishing high-quality, theoretical, and applied papers that cover all facets of geotechnics for transportation infrastructure such as roads, highways, railways, underground railways, airfields, and waterways. The journal places a special emphasis on case studies that present original work relevant to the sustainable construction of transportation infrastructure. The scope of topics it addresses includes the geotechnical properties of geomaterials for sustainable and rational design and construction, the behavior of compacted and stabilized geomaterials, the use of geosynthetics and reinforcement in constructed layers and interlayers, ground improvement and slope stability for transportation infrastructures, compaction technology and management, maintenance technology, the impact of climate, embankments for highways and high-speed trains, transition zones, dredging, underwater geotechnics for infrastructure purposes, and the modeling of multi-layered structures and supporting ground under dynamic and repeated loads.