The governing scattering mechanism from air-ground boundary is also easily detected around at. Also, the images for the km and the. In any case, hsa is shown to have difficulty only in providing a reasonable representation of the uppermost target along the spatial direction. As the gpr antenna has a finite beamwidth, any subsurface object is illuminated for a finite length along the b-scan axis as demonstrated in figure.
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In km method, the following correction factors that are not considered in the hyperbolic summation are accounted. For each shot, we obtain the reflection which is referred to as the a-scan and the collection of such several a-scans gives the 2-d b-scan image which is used for processing. B-scan image of gpr data of targets 1, 2 and 3.