Experiment of Ground Penetrating Radar Signal Flaw Recognition

In order to study road surface flaw recognition by ground penetrating radar(GPR),for signal processing of ground penetrating radar echo,through embedding metal plate in each contact surface of base course,the denoising effects of digital filtering,deconvolution,wave equation migration,and multiscale wavelet analysis were compared.Then,the obviously effective methods for improving abnormal resolution and singular value decomposition were proposed and used for road detection.The results show that(1) deconvolution and wave equation migration have obvious effect for improving abnormal resolution;(2) wavelet transform technique has good effect of denoising and singular value decomposition,so it can reduce the work load of data processing and increase the accuracy of examination.