Detection and classification of liquid explosives using NMR

Author

Gudmundson, E. ; Jakobsson, A. ; Poplett, I. J F ; Smith, J.A.S.

Author_Institution

Dept. of Inf. Technol., Uppsala Univ., Uppsala

fYear

2009

fDate

19-24 April 2009

Firstpage

3053

Lastpage

3056

Abstract

In this work, we present a novel method for non-invasive identification of liquids, for instance to allow for the detection of liquid explosives at airports or border controls. The approach is based on a nuclear magnetic resonance technique with an inhomogeneous magnetic field, forming estimates of the liquid´s spin-spin relaxation time, T₂, and diffusion constant, D, thereby allowing for a unique classification of the liquid. The proposed detectors are evaluated using both simulated and measured data sets.

Keywords

diffusion; explosions; explosives; liquids; magnetic fields; military computing; nuclear magnetic resonance; NMR; airport; border control; diffusion constant; inhomogeneous magnetic field; liquid explosives classification; liquid explosives detection; noninvasive liquid identification; nuclear magnetic resonance; spin-spin relaxation time; Airplanes; Airports; Explosives; Magnetic field measurement; Magnetic liquids; Nuclear magnetic resonance; Radio frequency; Security; Signal processing; Terrorism; classification; detection of liquid explosives; nuclear magnetic resonance;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech and Signal Processing, 2009. ICASSP 2009. IEEE International Conference on

Conference_Location

Taipei

ISSN

1520-6149

Print_ISBN

978-1-4244-2353-8

Electronic_ISBN

1520-6149

Type

conf

DOI

10.1109/ICASSP.2009.4960268

Filename

4960268