Anti-personnel mines (APM) are spread over lots of countries which have been involved in wars. APMs usually do not possess self-destroying mechanisms and due to their long active time jeopardize the lives of millions of people. They are difficult to find with commercial metal detectors, because their content of metal is very low and in some cases even zero. Nevertheless more than 99% of all mines buried in the upper soil at least contain a little amount of metal inside the detonator. In this fact is founded the development of the surface scanning mine detection system ODIS (ordnance detection and identification system). The idea of ODIS is an imaging induction coil sensor (ICS) system which detects minimum metal volumes, calculates a real-time picture on a color screen showing the position, size and shape of metal parts buried in the ground and automatically marks the position on the ground. The measured data can be stored on disk and tape and can be post-processed for further information as depth, volume, kind of metal and contour in order to get a classification or even identification of the buried objects.
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