13 August 2002 Model-based summary conclusions on the use of UWB radar for detecting unexploded ordnance
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The utility of ultra-wideband (UWB) synthetic aperture radar (SAR) for detecting surface and flush buried unexploded ordnance (UXO) is examined using a layered-medium moment method analysis. Clutter models of a subsurface root system have been created using a set of discrete clutter objects. Given the size of the targets and the wideband frequencies of interest, it is shown that the problem size quickly grows beyond the capabilities of even supercomputers. As a result, an approximate linear superposition technique is developed to model the response from a large number of targets (UXO plus clutter objects). The root system clutter model is used in conjunction with the buried UXO targets. Results show that sufficient signal to clutter ratios are achieved to make such a scenario amenable to target detection. The scattering from multiple, randomly oriented, surface-laid UXO is examined next. Results show that targets oriented broadside to the radar aperture have the largest signatures in the SAR image. This suggests a multi-pass strategy over the potential UXO test area for airborne SAR systems.
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Anders J. Sullivan, Anders J. Sullivan, } "Model-based summary conclusions on the use of UWB radar for detecting unexploded ordnance", Proc. SPIE 4742, Detection and Remediation Technologies for Mines and Minelike Targets VII, (13 August 2002); doi: 10.1117/12.479100; https://doi.org/10.1117/12.479100

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