The measurement survey was performed in 12th July 2017 by using the IDS manufactured RIS K2_FW GPR system (https://idsgeoradar.com/products) equipped with the dual frequency (200 MHz and 600 MHz) antenna. The data were gathered along 10 profiles about 7.5 m long, with a spacing between the profiles equal to 0.5 m. The raw data, collected during both the GPR campaigns, were processed by means of the same processing chain. This latter was designed in the frame of Heracles project and it is based on a microwave tomographic approach, which faces the imaging as the reconstruction of the contrast function, i.e. the function accounting for the unknown dielectric permittivity variations occurring into the region under test with respect to the known reference dielectric permittivity. Accordingly, the output of the GPR data processing chain is the 3D spatial distribution of the amplitude of the reconstructed contrast function, as normalized to its maximum value, and it is represented by means of constant depth slices, which for brevity are referred to as tomographic images.
The picture below shows the measurement campaign.
| Wird ausgeführt am: | 12.07.2017 00:00 |