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Georadar / Ground penetrating radar (GPR)

TAUBER uses georadar to locate disturbance bodies even in situations where other processes reach their limits, e.g. in the track area. A further advantage is that GPR can also detect non-metallic interfering substances and is thus particularly suitable for cable and pipe detection.  

Principle of Measurements

Georadar is an active geophysical method, the operation of which can be compared with an echo sounder. Thus, an electromagnetic wave is radiated from a transmitter antenna into the ground, which spreads in the ground. If this wave hits a disturbing body or another change in the ground, it is reflected. These reflected waves are registered by a receiving antenna.

 

By using shielded antennas, the propagation of the waves can be focused in one direction. As a result, georadar measurements can also be carried out directly next to other disturbing bodies, e.g. in the track area.

The penetration depth of the georadar dependents on the geological conditions on site and the selected measuring frequencies. In the case of the frequency ranges necessary for the detection of interfering bodies, a detection up to 2.0 m depth is possible in wet soils, but this detection depth can also be increased up to 5.0 m for dry sand soils.


Applied Technique

We use Georadar in the frequency range of 100 - 1000 MHz. The antennas we use are both single- and two-frequency measurement systems. With these antennas we can offer you the following measurements

  • Surface survey
  • Borehole detection
  • Borehole tomography