EM induction*

EM (Electro Magnetic) induction or Radio EM is a technique which determines the electrical conductivity of the underground in a non-destructive way. Metal objects like UXO (ferrous and non-ferrous), cables and pipelines, conductive soil layers and fracture zones in the underground can be detected with this geophysical technique.

How does Drone EM induction work?

The electromagnetic (EM) field is sent into the ground by a transmission coil. In conductive objects or layers this inducted EM-field is larger and of longer duration compared to the less conductive surrounding material. To detect conductive objects, peak values in the registered data are analysed according to their horizontal and vertical position, approximate dimensions of the conductive object and signal strength.

* EM detection with drones is still in the development phase.