This paper reports the results of tests where electrical impedance tomography (EIT) was evaluated as a tool for detecting and locating buried unexploded ordnance (UXO). The method relies on the electrolytic polarization induced at the boundary between soil and buried metal. This induced polarization (IP) produces a measurable phase delay between the electric current imposed on the subsurface an...

Current developments within the information technology industry are creating new opportunities for traditional information suppliers such as Ordnance Survey. In particular the ability to electronically trade information creates opportunities to increase the use of Ordnance Survey’s topographic information in ways that can be go beyond the delivery of such data in the form of a map. The future d...

1. Chen L., Du T., Xiao X., et al., 2019, Experimental and numerical simulation of 7075 aluminum target impacted with ogival-nosed projectiles, Ordnance Materials Science Engineering, 42, 5, 27-32. Google Scholar

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We describe an automatic procedure for building risk maps of unexploded ordnances (UXO) based on historic air photographs. The system is based on a cost-sensitive version of AdaBoost regularized by hard point shaving techniques, and integrated by spatial smoothing. The result is a map of the spatial density of craters, an indicator of UXO risk.