Algorithm for accurately estimating object depth by ground-penetrating radar

Ground-penetrating radar (GPR) is a remote sensing technique used to obtain information on subsurface features from data collected over the surface. In this paper, we propose an automatic algorithm for estimating objects depth using f- k migration and velocity scanning method for the homogeneous medium. To improve the accuracy of the algorithm, the formula used to calculate the GPR valid lateral aperture is presented. Experimental results show that the relative estimating error of depth is as low as 5%.