Towards non-cooperative standoff biometrics using extremely low frequency (ELF) processing

Kenneth A. Byrd; Harold Szu; Michael J. Wardlaw

doi:10.1117/12.820829

19 March 2009 Towards non-cooperative standoff biometrics using extremely low frequency (ELF) processing

Kenneth A. Byrd, Harold Szu, Michael J. Wardlaw

Proceedings Volume 7343, Independent Component Analyses, Wavelets, Neural Networks, Biosystems, and Nanoengineering VII; 734314 (2009) https://doi.org/10.1117/12.820829
Event: SPIE Defense, Security, and Sensing, 2009, Orlando, Florida, United States

Abstract

Earth's Field Nuclear Magnetic Resonance (⊕-NMR) is a novel detection technique that exploits the uniformity of the earth's magnetic field to measure precessing magnetizations of isotope-having objects such as human beings. The ability to provide standoff medical surveillance will increase the Biomedical Wellness (BMW) of not only aging American citizens but also persons we seek to track from healthy to diseased states. Taking advantage of the uniform field in the earth, spatio-temporal integration (3 orders due to time and 4 orders due to space) and Higher Order Statistics (HOS), namely, change detection via kurtosis (ΔK), SNR and the ability to make non-locality measurements may be increased to at least the level of the typical hospital NMR devices. Moreover, we present theoretical calculations of magnitude and consider time dynamics of the resonant/relaxing magnetic fields as a function of 3D human motion and distance.

Citation Download Citation

Kenneth A. Byrd, Harold Szu, and Michael J. Wardlaw "Towards non-cooperative standoff biometrics using extremely low frequency (ELF) processing", Proc. SPIE 7343, Independent Component Analyses, Wavelets, Neural Networks, Biosystems, and Nanoengineering VII, 734314 (19 March 2009); https://doi.org/10.1117/12.820829

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