Abstract
Current research focuses on the use of multiple sensors for landmine detection, as opposed to approach which use a single sensor. Magnetic and electromagnetic methods are perhaps the most convenient and popular geophysical survey methods for detecting buried manmade metallic objects; which are due to their non-intrusiveness, high survey speed and quality of information. Meanwhile, the neutron backscattering method can detect the explosive materials in the landmine, which cannot detect by the two mentioned methods. An experimental study has been conducted using the three techniques to determine the minimum lateral resolving distance between two adjacent landmines and to detect the buried situated at deeper depths. The results showed that the magnetic susceptibility and neutron backscattering methods have a minimum lateral resolving distance of about 40 cm while, they have a limited penetration depth. Meanwhile, the horizontal-loop electromagnetic (HLEM) method has a relatively wider lateral resolving distance but it can detect the buried metallic object to several meters depths. Therefore, such combination of the three mentioned methods to detect the landmine yields more information about the type, lateral resolving distance between two adjacent landmines and depth of the buried landmines than is obtain, when each method is used individually. Also, such results will help greatly in evaluating any multi-sensors detection approach of magnetic susceptibility, electromagnetic and neutron backscattering techniques.