To study the structure of the subsurface medium in detail and detect objects within it, an area GPR survey method is used. Within this method, the investigated object is covered by a grid of GPR profiles with accurate coordinate referencing. The profiles can have arbitrary length, orientation, and a curvilinear shape. 

Based on Automated BSEF Analysis, an attribute section is created for each profile of the area survey. The obtained sections are combined into a three-dimensional data array. The attribute values between the sections are determined by interpolation. 

The spatial position of the sections during assembly formation is set using coordinates from files of GPS or GLONASS global positioning systems. Manual coordinate tables can also be used. 

The software provides a wide set of tools for working with the 3D assembly. Volume visualization of the assembly and its individual slices is implemented. Both orthogonal slices and slices of arbitrary configuration are supported. Isosurfaces passing through specified attribute values and dividing the volume into regions can be created, followed by calculation of their volumes. 

It is possible to remove fragments of the volume, control the transparency of assembly elements, and set transparency by the range of attribute values. For slices of the 3D assembly, manual operations for picking layer boundaries, statistical analysis, and exporting data to various formats are provided. 

The figure below shows some visualization options for the volume of the 3D assembly of sections. In the top row, on the left, an array with the upper quarter of the volume cut out is shown. On the right, orthogonal slices are shown. On the bottom left, an array with a cut-out volume of a specified attribute range is shown. On the bottom right, isosurfaces as layer boundaries are shown.