Nuclear quadrupole resonance signal detectability enhancement methods - An overview

Abandoned landmines and terrorist bomb attacks are severe issues threatening public security. Nuclear quadrupole resonance (NQR) detection technology has proven to be a highly effective solution for detecting explosives unambiguously. Unfortunately, the practical use of NQR is restricted by the low signal to noise ratio (SNR) and the radio frequency interference (RFI). The interference mitigation and detection of weak NQR signals are the core and the key of the NQR technique. From the perspective of signal processing, the noise and interference mitigation methods are summarized in this paper.

[1]  B. H. Suits,et al.  The noise immunity of gradiometer coils for14N NQR land mine detection: Practical limitations , 2004 .

[2]  Robert Matthews,et al.  Remote sensing by nuclear quadrupole resonance , 2001, IEEE Trans. Geosci. Remote. Sens..

[3]  Leslie M. Collins,et al.  Kalman filtering for enhanced landmine detection using quadrupole resonance , 2005, IEEE Transactions on Geoscience and Remote Sensing.

[4]  Huang Xueyi,et al.  Study of RF Coil in NQR Explosive Detection System , 2012 .

[5]  Hong Xiong,et al.  Adaptive beamforming for quadrupole resonance , 2007, Digit. Signal Process..

[6]  Andreas Jakobsson,et al.  Exploiting temperature dependency in the detection of NQR signals , 2006, IEEE Transactions on Signal Processing.

[7]  Andreas Jakobsson,et al.  Frequency-selective detection of nuclear quadrupole resonance signals , 2005, IEEE Transactions on Geoscience and Remote Sensing.

[8]  Joel B. Miller,et al.  Nuclear Quadrupole Resonance Detection of Explosives , 2007 .

[9]  Tao Su,et al.  SVD for enhanced explosives detection using NQR , 2010 .

[10]  T. N. Rudakov.  Modification of SSFP technique for the effective detection of NQR signals , 2006 .

[11]  Leslie M. Collins,et al.  Landmine detection with nuclear quadrupole resonance , 2002, IEEE International Geoscience and Remote Sensing Symposium.

[12]  H. Itozaki,et al.  Detecting the $^{14}{\rm N}$ NQR Signal Using a High-Tc SQUID , 2007, IEEE Transactions on Applied Superconductivity.

[13]  Yi Jiang,et al.  Radio Frequency Interference Suppression for Landmine Detection by Quadrupole Resonance , 2006, EURASIP J. Adv. Signal Process..

[14]  Michael W. Hoffman,et al.  A Low-Power Compact NQR Based Explosive Detection System , 2014, IEEE Sensors Journal.

[15]  L. Cerioni,et al.  RF probe recovery time reduction with a novel active ringing suppression circuit. , 2005, Journal of magnetic resonance.

[16]  Kaspar Althoefer,et al.  Detecting NQR signals severely polluted by interference , 2017, Signal Process..

[17]  Andreas Jakobsson,et al.  Robust Nuclear Quadrupole Resonance Signal Detection Allowing for Amplitude Uncertainties , 2008, IEEE Transactions on Signal Processing.

[18]  Yi Jiang,et al.  Array signal Processing in the known waveform and steering vector case , 2004, IEEE Trans. Signal Process..