Measuring experiment of FMCW ground penetrating radar

The paper describes measurement results obtained from FMCW GPR radar. Main goal of the article is to present real GPR data after AutoESP (Auto Estimation of Soil Permittivity) processing. The iterative AutoESP method is required to estimate proper value of permittivity. In order to test correct operation of the radar, several objects were buried in the tested ground. Focused SAR algorithm has been applied to achieve good azimuth resolution.