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11 September 2003 Modified E-pulse target discrimination for MSI of metallic landmines
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Abstract
Magnetic Singularity Identification (MSI) is a technique that is used to determine the unique natural resonances of metallic objects such as land mines. Dyadic MSI theory is extended herein to rotationally symmetric metal mines, including formalization of an averaged data waveform of individual measurements taken over multiple illumination polarizations. Identification of threat target objects and discrimination against innocuous metal clutter items by pole extraction techniques in real time is viable, but is highly computationally intensive and pushes the state-of-the-art of real-time computing systems. Simpler and faster alternative identification/discrimination algorithms are sought. One promising candidate is the E-pulse technique, or a modification thereof called the ξ-pulse. This note addresses the specific application of the E-pulse approach to metallic targets where three distinct exponential decay terms can be extracted using MSI techniques. These decay terms, obtained from calibration runs in non-real time, are used to build a library of known threat targets and corresponding E-pulse waveforms. These are used in turn to provide a mine discrimination metric in real time in the field.
© (2003) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Gary D. Sower "Modified E-pulse target discrimination for MSI of metallic landmines", Proc. SPIE 5089, Detection and Remediation Technologies for Mines and Minelike Targets VIII, (11 September 2003); https://doi.org/10.1117/12.484902
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