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Georadar GPR

 

The ground penetrating radar is a non-destructive technique who puts on use high frequency electromagnetic waves.

It is based on the propagation, reflection and the reception of electromagnetic waves, when it encounter a surface between two elements who possess different electrical proprieties a fraction of its energy (the wave) is reflected, received and measured by a captor.

The reflected wave is a witness of what we call the reflector who is the contrast of electrical impedance between two elements.

The georadar is used in many domains:

  • Radiography of the sub-surface
  • Characterization of the shod
  • detection of cavities