Three-dimensional Imaging Algorithm of Multi-layer Medium Ground Penetrating Radar

Due to the limitation of the 2D ground penetrating radar (GPR) imaging algorithm, a 3D GPR imaging algorithm which can be applied to multi-layer medium is proposed in this paper. In the case of multi-layer media, the selection of refraction points also has a great impact on the accuracy of target imaging in the traditional method. Therefore, an equivalent medium layer method is adopted to simplify the multi-layer media mode. At the same time, a sparse Bayesian algorithm is used to reconstruct. The experimental results show that the imaging position of the target is more accurate and the imaging results are more intuitive.