An underground tunnel network long rumored thanks to drawings by Leonardo da Vinci under Milan’s Sforza Castle are proven to ...

one of the few GPR firms to do so. This enables the company to scan more than 20 plus feet down, while mapping out soil layers and deeper anomalies.

We test different GPR designs for ice penetration and sub-surface imaging. We determine the electrical characteristics of concrete cores for studying weathering effects and moisture retention. We ...

However, there are many other secret passageways. The investigation used advanced technologies, such as GPR and laser scanners, to create an accurate map of the Castle's sub-surface and the ...

In our proposed approach, GPR B-scan images are treated as graph signals and transformed into the graph frequency domain via graph Fourier transform (GFT). This framework incorporates B-scan images ...

Each mat (GPR B-scan image) contains three GPR B-scan images collected in parallel. In each GPR image, the distance between each column (trace) is 3cm. The samples per trace are 380, and the time ...