engleski

Significance of buried object orientation variation in their detection using thermography

Landmines and part of a complex system with variable-in-time characteristics. If thermography is applied on such a system, the most significant characteristics of resulting thermograms is overcritical noise. That has severely suppressed thermography applications in the landmines detection for humanitarian demining**. The attempts to realise as much of the thermography potential as is possible motivated concentrating onto sources of noise in buried objects thermograms, in particular onto variations in mine orientation relative to soil normal. In this paper the experiment is conducted for determining quantitatively the influence of angle between the local vertical axis and mine symmetry axis, angle between local vertical axis and soil surface normal and the object depth change. The influences are quantified and ranked through the statistically planned experiment. The most influential influence is statistical interaction of the depth and the angles. These two combinations are, according to the statistical test, significant influences. The results point that present day thermography applications in humanitarian demining are to be broadened with the inclusion of the variations in mine orientation.

thermography; buried objects; humanitarian demining; detection; factorial design of experiment

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