Impedance Tomography is a powerful technique for mapping discontinuities in electrical impedance. In conductive soils (generally, agricultural soils contain sufficient moisture to be conductive enough) both metal and plastic-cased mines can be located in 2D or 3D and some information about their size obtained. Imaging may also be posible. However, in addition to the need for research on suitable algorithms, the technique is difficult to apply in practice, especially in the single-sided approach needed for buried mines. An array of electrodes must make contact with the ground to supply and measure the electric field. The time required to install electrodes and measure is not generally competitive with direct manual demining, though novel approaches such as using multiple water-jets for the ground contact have been tried and may be useful.

Please see the speiclaist literature, and the comments by VUB, below, for further information.

Record updated on : 13 March 2014
Record id : 12