UXO Discrimination in Cases with Overlapping Signatures
Abstract
New technology, modeling, and processing methods were investigated to attack the problem of buried UXO discrimination in highly contaminated sites. Such sites features a number of scenarios that challenge established subsurface sensing and data processing approaches, in particular 1) widely dispersed small metallic clutter items; 2) screening or obscuration of larger items by distributions of smaller clutter; 3) multiple target problems, in which a number of UXO-sized objects present simultaneously in the field of view of a sensor, so that their signals overlap and are difficult to distinguish. There were attacked with ultra-wideband electromagnetic induction (EMI) and fully polarimetric ground penetrating radar (GPR) developments were pursued, both individually and together. GPR was largely immune to problems caused by smaller near-surface metallic objects but suffered signal clutter from soil heterogeneity. While less soil sensitive, EMI was substantially hindered by discrete or dispersed near surface clutter, with some apparent discrimination advantage to be had from elevating the sensor. GPR helped suppress EMI false alarms in blind tests.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 07, 2007
- Accession Number
- ADA603928
Entities
People
- Kevin O Neill
Organizations
- Engineer Research and Development Center