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探地雷达对路面板脱空现象检测时的信号分析与处理

Keywords: 道路工程,路面板脱空,路用探地雷达,探测原理,信号分析

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Abstract:

基于探地雷达对水泥混凝土路面板探测原理,推导出当路面板下出现脱空时反射波传播发生变化的时差公式。分析路用探地雷达检测时的回波信号,针对由于噪声而出现的各种杂波信号,提出滤波处理方法,保留有用的回波信号。利用小波分析方法,对山东烟台—威海高速公路试验段探地雷达实地检测所得信号进行分析,剔除各种误差,以准确测得脱空厚度。结果表明,采用探地雷达方法具有快速、无损、精度高等优点。

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