Detection of surface-breaking cracks has been realized by signal processing method using the reference signal from a surface without flaws. The principle and experimental results are given.

本文以无缺陷时的表面回波为参考信号，用信号处理方法，识别表面缺陷回波，从而实现对表面缺陷的检测。文中给出了该方法的原理及实验结果。

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Mainly for the asphalt pavement cracks, pits and side issues such as eating, cement concrete pavement surface is also a serious breaking of the rupture and other issues.

沥青路面主要表现为裂缝、坑槽和啃边等问题，水泥混凝土路面也出现严重的挤碎、破裂等问题。

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