Discrimination Study with the Man-Portable Vector (MPV) EMI Sensor at Former Camp Beale, California
Abstract
The MPV is a handheld Electromagnetic Induction (EMI) sensor developed for the purpose of extending UXO discrimination to most land locations, especially at sites inaccessible to wheel-based platforms. Key features of the MPV include an array of five vector receivers, a widely programmable user interface that allows different survey modes, and a portable positioning system based on a primary field monitor -- the MPV transmitter acting as a beacon. The initial MPV prototype was developed by USACE-CRREL with SERDP (MR-1443) before integrating ESTCP demonstration program (MR-201005) with Sky Research, G&G Sciences and CRREL. The prototype was ruggedized and field-tested at the Standardized UXO Test Site at Yuma Proving Ground, AZ in October 2010. The demonstration was successful, obtaining over 90% detection and discrimination rates on the blind grid for targets within one meter depth. In Spring 2011 ESTCP organized a field demonstration study for man-portable discrimination systems at former Camp Beale, California. The site included sloping terrain, large boulders, open field and forest. Our team deployed the MPV technology to collect cued interrogation data over more than 900 anomalies over 2.5 weeks in June. Because UXO discrimination with MPV data requires collection of multiple soundings to characterize an anomaly, accurate positioning is crucial. The MPV-specific beacon positioning system was used throughout the site and proved to be essential under thick tree cover, where positional accuracy with GPS was severely degraded. Data collected in the field, on the Instrument Verification Strip (IVS) and test pit were made available for advanced geophysical processing. Several research groups were involved in independent analysis. Data were inverted and classified to build prioritized dig lists. This presentation presents the field data collection effort and results from the data analysis and classification.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 2011
- Accession Number
- ADA554357
Entities
People
- Benjamin E. Barrowes
- David George
- Jon Jacobson
- Nicolas Lhomme