Explosive ordnance detection with ground penetrating radar (GPR) - Georadar
Data aquisition with georadar
Georadar mapping is used for areas with high anthropogenic loads (fillings, sealings, ballast, rails, ferrous construction elements, utility lines, etc.). Georadar is based on the pulse radar principle, whereby a transmitting antenna emits short high-frequency electromagnetic pulses into the ground, where they reflect/diffract against boundary layers and objects and can consequently be recorded by a receiver. The wave velocity and transit time of the electromagnetic pulses enable us to determine the depth of the detected objects.
The lower the conductivity of the terrain, the deeper we are able to reach. Examples of terrain with low conductivity includes: Ice, crystalline-structures and salt deposits. The accuracy of detection is contingent on the measurement frequency. Higher frequencies enable us to obtain improved resolution with a lower penetration depth.