Expanded Processing Techniques for EMI Systems
Final rept. Oct 2010-Apr 2012
GEOMETRICS INC SAN JOSE CA
Pagination or Media Count:
The goal of this project was to improve the data processing algorithms and optimize the instrument using the results and experience of prior MetalMapper UXO-discrimination demonstrations at the former Camp San Luis Obispo and the former Camp Butner. We explored 4 main topics. First, we examined the detection algorithms and discovered that, indeed, it is possible to perform better target detection using physics-based algorithms and the entire data set, rather than simulating a simpler data set and mapping the result. Secondly, we examined the data array itself, and conclude that a smaller set of receivers could be used, so long as the instrument is accurately located above the unknown target. The outer receivers provide significant benefit for interrogating targets at an offset of more than 40cm from the center of the array. Thirdly, we generalized our inversion algorithms to allow for data to be combined from more than one instrument location. Finally, we examined methods for inverting and analyzing data from multiple targets simultaneously.
- Electricity and Magnetism