EMI Array for Cued UXO Discrimination
Abstract
A vehicle-towed array of time-domain electromagnetic sensors was designed and operated to optimize the classification of buried munitions from ancillary metallic debris and clutter. The array was designed to combine the data quality advantages of a gridded survey with the coverage efficiencies of a vehicular system. The design goal for this system was to collect data equal, if not better, in quality to the best gridded surveys while prosecuting many more targets each field day. In order to separate out the intrinsic target response properties from sensor/target geometry effects, the measured signature is inverted to estimate principal axis magnetic polarizabilities using a standard induced dipole response model. The technology was validated through two blind tests conducted at the Aberdeen Proving Ground Standardized UXO Test Site and as part of the ESTCP UXO Classification Study at the former Camp San Luis Obispo. The performance metrics used to monitor the success of the technology relate to production rate, accuracy of inverted features, analysis time, correct classification, and ease of use. Implementation issues of the technology are also discussed.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 07, 2011
- Accession Number
- ADA539608
Entities
People
- D. A. Keiswetter
- D. C. George
- J. B. Kingdon
- T. Furuya
- T. H. Bell
Organizations
- United States Naval Research Laboratory