A workflow for the discrimination of multi-peak anomalies due to an unexploded
ordnance (UXO) is presented. The effects of changes in the depth and orientation of a
subsurface target on its TEM response are explored. Further, the variation of the peak
separation, peak widths, maxima to minimum ratios and maxima values through time are
modelled. Models of spatial and temporal variations are performed for both one and twotargets.
These models are devoid of noise and focus primarily on the 3lb FLBGR bomb.
It is found that the decay of the magnitudes of the anomaly maxima are related to the
decay of the characteristic polarization curves of the UXO that creates them. The
behaviour of the decay of the magnitudes of the maxima values of multi-peak anomalies
is determined to be a good indication of target number in the subsurface. Observing these
decays, it is possible to distinguish between two multi-peak scenarios, namely: a) a multipeak
anomaly produced by a single UXO or two UXOs of the same type; and b) a multipeak
anomaly produced by two UXOs of different types.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:BVAU.2429/1113 |
| Date | 23 July 2008 |
| Creators | Kushnir, Alexandra R. L. |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | text |
| Rights | Kushnir, Alexandra R. L. |
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