A shallow geophysical method with a variety of applications. The transmitter of the radar antenna emits electromagnetic radiation propagating in the form of waves. These waves get refracted and reflected at boundaries of geological strata and different objects, while they advance at different velocities. Modified signals detected by the receiver of the antenna allow the surveying of underground structures.

Penetration depth and resolution are depending on antenna frequency. Down to 7 – 8 m geological structures and underground cavities, to 4 – 5m utility pipelines, archaeological objects and contaminations can be mapped, using shallower penetration concrete structures can be analysed.

Ideally 8 – 10 km of measurement can be made in a day, i.e. approximately 1 ha can be surveyed. The processing of results takes 2 – 3 days.