The goal of this project was to expand existing investigations and processing routines for advanced electromagnetic induction (EMI) arrays. Previous demonstrations conducted with advanced systems both at seeded sites (e.g., Aberdeen Proving Ground, MD and Yuma Proving Ground, AZ) and live sites such as Camp Sibert, AL, Camp San Luis Obispo (SLO), CA and Camp Butner, NC have shown that unanswered questions remain relating to antenna array configuration, physics-based target modeling, and classification.
The project objective was not to develop new sensors, sensor hardware, or programs for target modeling. Rather, it was to seize an opportunity to review and update earlier research in retrospect in order to search for a better and/or simpler antenna configuration, and to maximize the benefit derived from these systems through expanded data processing and better anomaly classification. The study was enabled and justified by the fact that real data and ground truth were available from the ESTCP classification studies at SLO and Camp Butner.
The research was focused on five tasks:
Results by task include:
This project expanded the software support for current state-of-the-practice MetalMapper surveys. The detection and inversion phases were enhanced. These routines were demonstrated with modeled data and with a few cases from actual surveys. More testing is needed to demonstrate that these routines should be part of standard workflows.