Research Advances in Explosives Detection Technique Based on Nuclear Quadrupole Resonance

doi:10.3969/j.issn.1000-1093.2013.12.013

Abstract

Abstract: Nuclear quadrupole resonance (NQR) is a solid-state radio frequency spectroscopic technique, allowing the detection of many high explosives. Unfortunately, the practical use of NQR is restricted by the low signal-to-noise ratio (SNR) and the radio frequency interference (RFI). The parameter estimation and detection for NQR signals are becoming research hot points in NQR. From the perspective of signal processing, some topics related to NQR are analyzed in-depth, such as basic concept, signal model, signal excitation methods, interference suppression and detector for NQR signals. The research status of explosive detection using NQR is summarized, and some directions of further work in NQR and their difficulties are predicted.

Key words: information processing, nuclear quadrupole resonance, explosive detection, parameter estimation and detection of weak signal, radio frequency interference suppression

CLC Number:

ZHU Kai-ran, SU Tao, HE Xue-hui. Research Advances in Explosives Detection Technique Based on Nuclear Quadrupole Resonance[J]. Acta Armamentarii, 2013, 34(12): 1575-1588.

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