Automatic Layer-Interface Detection of Pavement Based on Matched Filter

Ground penetrating radar (GPR) is a non-destructive and non-intrusive subsurface investigation equipment which has been widely used in the field of civil engineering. As the GPR signals are easily corrupted by noise, so it´s always difficult to detect the multi-layer reflection signal of the pavement. To address the problem,In this paper we present the wavelet transform modulus maximum de-noising and Matched Filter (MF) method for clutter reduction and layer-interface automatic detection respectively. The experimental results based on simulated data using FDTD show that under the Low SNR condition, the presented algorithm outperform the MF algorithm alone.