Georadar or GPR (Ground Penetrating Radar) is a universal geophysical equipment, which can be used for nondestructive investigation and monitoring of subsurface objects and environments, where infringements,declines and changes that cause surface deformations and damages to roads, utilities, structures foundations etc. are searched for. In the area of environment, georadar is used in surveys of various types of landfills, background contamination, verification of underground water resources or in prospection of mineral resources. Georadar is very often used when searching for and mapping archaeological objects. Its versatility is also relevant in the inspection and control of concrete structures for structural scans of buildings walls or for material analysis.

Georadar’s measuring principle is based on the transmission and reception of high-frequency electromagnetic waves at different wave frequencies. Difference of subsoil and its rock in homogeneity including objects present in the soil cause that the emitted EM waves are reflected from these in homogeneities with different response time, which then allows us to see the various differences and anomalies according to the nature of the survey. For the desired depth range, antennas with frequencies from 50 MHz (for shallow measurements up to 5 m) up to 1 GHz with a range of EM waves up to 200 meters or more are selected. The measurements are evaluated online on the monitor (the diagnostics of roads and pipelines), or they are written on a disk for 2D and 3D postprocessing analysis and interpretations.