Dr. Geoffrey A. Barrall Profile

Dr. Geoffrey A. Barrall

at GE Security

SPIE Involvement:

Author

Publications (10)

Proceedings Article | 3 May 2016 Paper

Polarization enhanced Nuclear Quadrupole Resonance with an atomic magnetometer

Michael Malone, Geoffrey Barrall, Michelle Espy, Mark Monti, Dimitri Alexson, Jeffrey Okamitsu

Proceedings Volume 9823, 98230Z (2016) https://doi.org/10.1117/12.2224070

KEYWORDS: Polarization, Signal detection, Magnetometers, Magnetism, Sensors, Magnetic sensors, Signal to noise ratio, Resonance enhancement, Explosives, Nitrogen

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Proceedings Article | 10 June 2005 Paper

Advances in the engineering of quadrupole resonance landmine detection systems

G. Barrall, M. Arakawa, L. Barabash, S. Bobroff, J. Chepin, K. Derby, A. Drew, K. Ermolaev, S. Huo, D. Lathrop, M. Steiger, S. Stewart, P. Turner

Proceedings Volume 5794, (2005) https://doi.org/10.1117/12.603915

KEYWORDS: Electromagnetic coupling, Land mines, Amplifiers, Antennas, Sensors, Signal to noise ratio, Mining, Magnetism, Control systems, Data acquisition

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Proceedings Article | 21 September 2004 Paper

Radio-frequency interference suppression for the quadrupole-resonance confirming sensor

Guoqing Liu, Yi Jiang, Jian Li, Geoffrey Barrall

Proceedings Volume 5415, (2004) https://doi.org/10.1117/12.541950

KEYWORDS: Electromagnetic coupling, Antennas, Sensors, Data modeling, Land mines, Signal detection, Mining, Signal to noise ratio, Signal processing, Finite impulse response filters

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Proceedings Article | 21 September 2004 Paper

Development of a quadrupole resonance confirmation system

Geoffrey Barrall, Kevin Derby, Adam Drew, Konstantine Ermolaev, Shouqin Huo, Daniel Lathrop, Todor Petrov, Matthew Steiger, Stanley Stewart, Peter Turner

Proceedings Volume 5415, (2004) https://doi.org/10.1117/12.565157

KEYWORDS: Electromagnetic coupling, Land mines, Antennas, Sensors, Signal detection, Magnetism, Explosives, Mining, Signal to noise ratio, Quartz

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Proceedings Article | 22 August 2000 Paper

Field test results of a nuclear quadrupole resonance land mine detection system

Andrew Hibbs, Geoffrey Barrall, Simon Beevor, Lowell Burnett, K. Derby, A. Drew, David Gregory, C. Hawkins, S. Huo, A. Karunaratne, Daniel Lathrop, Young Lee, Robert Matthews, Steve Milberger, B. Oehmen, T. Petrov, David Skvoretz, S. Vierkoetter, David Walsh, Chin Wu

Proceedings Volume 4038, (2000) https://doi.org/10.1117/12.396284

KEYWORDS: Land mines, Mining, Metals, Explosives, Signal detection, Prototyping, Electromagnetic coupling, Molybdenum, Signal to noise ratio, Fourier transforms

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Proceedings Article | 2 August 1999 Paper

Detection of TNT and RDX landmines by standoff nuclear quadrupole resonance

Andrew Hibbs, Geoffrey Barrall, Peter Czipott, A. Drew, David Gregory, Daniel Lathrop, Y. Lee, Erik Magnuson, Robert Matthews, David Skvoretz, Stephie Vierkotter, David Walsh

Proceedings Volume 3710, (1999) https://doi.org/10.1117/12.357069

KEYWORDS: Land mines, Mining, Electromagnetic coupling, Explosives, Target detection, Sensors, Signal detection, Magnetism, Metals, Receivers

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Proceedings Article | 2 August 1999 Paper

Signal processing for NQR discrimination of buried land mines

Stacy Tantum, Leslie Collins, Lawrence Carin, Irina Gorodnitsky, Andrew Hibbs, David Walsh, Geoffrey Barrall, David Gregory, Robert Matthews, Stephie Vierkotter

Proceedings Volume 3710, (1999) https://doi.org/10.1117/12.357071

KEYWORDS: Sensors, Land mines, Electromagnetic coupling, Detection and tracking algorithms, Signal to noise ratio, Explosives, Signal processing, Antennas, Magnetism, Signal detection

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Proceedings Article | 4 September 1998 Paper

Land mine detection by nuclear quadrupole resonance

Andrew Hibbs, Geoffrey Barrall, Peter Czipott, Daniel Lathrop, Y. Lee, Erik Magnuson, Robert Matthews, Stephie Vierkotter

Proceedings Volume 3392, (1998) https://doi.org/10.1117/12.324225

KEYWORDS: Antennas, Land mines, Metals, Explosives, Mining, Sensors, Signal detection, Magnetism, Prototyping, Explosives detection

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Proceedings Article | 26 March 1998 Paper

Wavelet-based enhancements to nuclear quadrupole resonance explosives detectors

Stephen Kercel, William Dress, Andrew Hibbs, Geoffrey Barrall

Proceedings Volume 3391, (1998) https://doi.org/10.1117/12.304892

KEYWORDS: Explosives, Land mines, Wavelets, Sensors, Image filtering, Signal processing, Signal detection, Explosives detection, Signal to noise ratio, Feature extraction

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Proceedings Article | 29 January 1997 Paper

Screening sealed bottles for liquid explosives

Sankaran Kumar, W. Casey McMichael, Y.-W. Kim, Alan Sheldon, Erik Magnuson, L. Ficke, T. Chhoa, C. Moeller, Geoffrey Barrall, Lowell Burnett, Peter Czipott, J. Pence, David Skvoretz

Proceedings Volume 2934, (1997) https://doi.org/10.1117/12.265406

KEYWORDS: Liquids, Magnetism, Scanners, Explosives, Databases, Inspection, Signal detection, Computer security, Information security, Hydrogen

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Showing 5 of 10 publications

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