The Effect of Noise on EM61-MK2 and MetalMapper Classification Strategies

MR-201229

Demonstration Summary

Advances in next-generation electromagnetic induction (EMI) sensors and software algorithms in Geosoft's Oasis Montaj UX-Analyze module have begun to enable geophysical targets at munitions response sites (MRSs) to be classified into feature classes that differentiate between munitions and explosives of concern (MEC) and non-MEC items (e.g., munitions debris [MD] and scrap metal). As a part of the live site demonstration program, this project will demonstrate and validate the effectiveness of using current- and next-generation sensors along with advanced software to classify geophysical anomalies as either MEC or non-MEC. Data will be collected in production environments with the industry standard Geonics EM61-MK2 and next-generation TEMTADS 2x2 array and Geometrics MetalMapper sensors and analyzed in Geosoft's UX-Analyze using both the single-source and multisource solver classification algorithms. After classification and intrusive investigation of anomalies, the classification results from the sensors will be compared and evaluated to determine their relative effectiveness in classifying targets of interest (e.g., MEC) from targets that are not of interest (e.g., MD, scrap metal). This comparative analysis will help industry geophysicists develop classification methodologies that focus intrusive investigations on only those items that pose a potential explosive hazard and reduce the costs of remediation at MRSs.

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Technology Description

This project will use the industry standard EM61-MK2 and the advanced TEMTADS 2x2 array and MetalMapper sensors. The EM61-MK2 is the industry standard EMI sensor for production level surveys. It consists of two parallel 1 m by 0.5 m coils. The TEMTADS 2x2 array is an EMI sensor that consists of four co-planar 0.35 centimeter (cm) x 0.35 cm transmitter and receiver coils. The MetalMapper is also an EMI system, but it consists of three orthogonal 1-m x 1-m transmitter coils and seven 10-cm tri-axial receiver cubes that measure the three-dimensional components of the geophysical target's magnetic field response. EM61-MK2 data will be collected in a dynamic survey mode, while the TEMTADS 2x2 array and MetalMapper data will be collected in the static, cued mode. All sensors will be positioned using real time kinematic differential global positioning systems.

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Points of Contact

Principal Investigator

Mr. Stephen Stacy

ARCADIS/Malcolm Pirnie

Phone: 703-465-4234

Fax: 703-351-1305

Program Manager

Munitions Response

SERDP and ESTCP

Document Types

  • Fact Sheet - Brief project summary with links to related documents and points of contact.
  • Final Report - Comprehensive report for every completed SERDP and ESTCP project that contains all technical results.
  • Cost & Performance Report - Overview of ESTCP demonstration activities, results, and conclusions, standardized to facilitate implementation decisions.
  • Technical Report - Additional interim reports, laboratory reports, demonstration reports, and technology survey reports.
  • Guidance - Instructional information on technical topics such as protocols and user’s guides.
  • Workshop Report - Summary of workshop discussion and findings.
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