A Signal Processing Method for 14N-Nuclear Quadrupole Resonance Detection of Pentaerythritol Tetranitrate

Abstract

Abstract:

Nuclear quadrupole qesonance (NQR) methods can be used to detect hidden explosive, with advantages such as high accuracy, low false alarm rate and non-radioactive contamination. However, the practical use of the NQR methods for explosive detection are limited by low signal-to-noise ratio. In this work, a signal process method for NQR signals is presented, which is based on wavelet transform and specially designed for the detection of pentaerythritol tetranitrate (PETN) with NQR. It was shown that this method can eliminate the interferences from external noises, and improve the accuracy of PETN detection.

Key words: NQR, explosive detection, wavelet transform, pentaerythritol tetranitrate

CLC Number:

O482.53

YANG Zhen-Lei, XU Geng-Guang, WANG Zhen-Hua, LIU Ke-Zhong, HAO Feng-Long. A Signal Processing Method for ¹⁴N-Nuclear Quadrupole Resonance Detection of Pentaerythritol Tetranitrate[J]. Chinese Journal of Magnetic Resonance, 2009, 26(4): 518-523.

References

[1] Gao Pan(高攀), Jin Yao-hui(金耀辉), Zhang Guo-jin(张国进), et al. An explosive detection method based on NQR(基于核四极矩共振原理的炸药探测方法研究与实验)
[J]. Chinese Journal of Magnetic Resonance(波谱学杂志), 2008, 25(3): 371-378.

[2] Li Geng-ying(李鲠颖), Xia Xiao-jian(夏小建), Xu Xue-cheng(徐学诚). Remote nuclear quadrupole resonance detector for nitrogen-contained compounds in solids(含氮固体物质的核四极共振远程探测仪)
[J]. Chinese Journal of Scientific in Strument(仪器仪表学报), 1997, 18(4): 368-372.

[3] Zhou Jian-xin(周新建), Zhang Guo-jin(张国进), Gao Pan(高攀). Research on method of suppression of ring in NQR detection system(NQR探测系统振铃拖尾抑制方法研究)
[J]. Nuclear Electronics & Detection Technology(核电子学与探测技术), 2008, 28(3): 477-480.

[4] Zhao Zhen-Wei(赵振维), Lou Yang(娄扬), Jin Yan-Bo(金燕波). Signal processing for NQR based on adaptive filtering(基于自适应滤波技术的NQR信号处理)
[J]. Nuclear Elect ronics & Detection Technology(电波科学学报), 2008, 28(3): 429-433.

[5] Guo Hua-ming(郭华民), Zhang Guo-jin(张国进), Chen Chun(陈春), et al. Removal of the tail ing effects of transmitting pulse in a nuclear quadrupole resonance detecting system for explosive detection(NQR炸药检测系统中激励脉冲拖尾的抑制)
[J]. Chinese J Magn Reson(波谱学杂志), 2007, 24(2): 199-204.

[6] Peshkovsky A S, Cattena C J, Cerioni L M, et al. Noise-resilient multi-frequency surface sensor for nuclear quadrupole resonance
[J]. J Magn Reson, 2008, 194(2): 222-229.

[7] Deas R M, Gaskell M J, Long K, et al. An NQR study of the crystalline structure of TNT
[C]. Bellingham: Proc SPIE, 2004. 510-520.

[8] Li Zhi-qiang(李志强), Jin Yu-heng(金余桓). The data processing of the explosive detection system based on nuclear quadrupole resonance(基于核电四极矩共振技术的爆炸物检测系统的数据处理及信号识别算法)
[J]. Nuclear Electronics & Detection Technology(核电子学与探测技术), 2004, 24(6): 587-590.

[9] Li Geng-ying(李鲠颖). Study of shaping filtering in the detection of remote nuclear quadrupole resonance signals(整形滤波仔远程核四极共振探测中的应用)
[J]. Chinese J Magn Reson(波谱学杂志), 1996, 13(3): 303-308.

[10] Li Geng-ying (李鲠颖), Pan Tao(潘涛). Fast recognition of known signal by computer(己知信号的计算机快速识别)
[J]. Chinese J Magn Reson(波谱学杂志), 1996, 13(3): 283-290.

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[4]	YANG Zhen-lei; XU Geng-guang; WANG Zhen-hua; LIU Ke-zhong. An Information Database on Detecting Hidden Explosives with NQR-Based Methods [J]. Chinese Journal of Magnetic Resonance, 2009, 26(3): 385-392.
[5]	GAO Pan^1,2*; JIN Yao-hui¹; ZHANG Guo-jin²; ZHOU Xin-jian²; ZHANG Xiao-ke² . An Explosive Detection Method Based on NQR [J]. Chinese Journal of Magnetic Resonance, 2008, 25(3): 371-378.
[6]	CHEN Xing; XU Geng-guang. NQR Probe Recovery Time Reduction with a Novel Active Q-Switching Circuit [J]. Chinese Journal of Magnetic Resonance, 2008, 25(3): 397-401.
[7]	GUO Hua-min; ZHANG Guo-jin; CHEN Chun; GAO Pan. Removal of the Tailing Effects of Transmitting Pulse in a Nuclear Quadrupole Resonance Detecting System for Explosive Detection [J]. Chinese Journal of Magnetic Resonance, 2007, 24(2): 199-204.
[8]	CHEN Chun, ZHANG Guo-Jin, GUO Hua-Min, GAO Pan, HAO Guo-Xin. Detection of Explosives Using Nuclear Quadrupole Resonance Technique [J]. Chinese Journal of Magnetic Resonance, 2005, 22(4): 367-373.
[9]	Xia Youlin, HU Hongbin, Yang Baolian, Li Liyun, Ye Chaohui. THE RESPONSES OF THREE ENERGY LEVELS SPIN SYSTEM WITH SMALL ENERGY LEVEL SEPARATION TO PULSES [J]. Chinese Journal of Magnetic Resonance, 1996, 13(4): 311-320.
[10]	Li Gengying, Pan Tao. FAST RECOGNITION OF KNOWN SIGNAL BY COMPUTER [J]. Chinese Journal of Magnetic Resonance, 1996, 13(3): 283-290.
[11]	Li Gengying. STUDY OF SHAPING FILTERING IN THE DETECTION OF REMOTE NUCLEAR QUADRUPOLE RESONANCE SIGNALS [J]. Chinese Journal of Magnetic Resonance, 1996, 13(3): 303-308.
[12]	Li GengYing, Xie Haibin, Xia Xiaojian. A SIMPLE SCHEME FOR ¹⁴N NQR PROBE WITH FAST RECOVERY TIME [J]. Chinese Journal of Magnetic Resonance, 1996, 13(1): 95-97,100.
[13]	Xia Youlin, Ye Chaohui. THE MEASUREMENTS OF SPIN-LATTICE RELAXATION TIMES FOR A ¹⁴N NUCLEAR QUADRUPOLAR RESONANCE SPIN SYSTEM [J]. Chinese Journal of Magnetic Resonance, 1994, 11(4): 327-334.
[14]	Li Gengying, Jiang Yu, Wu Xuewen. OFF-RESONANCE EFFECT IN ¹⁴N REMOTE NQR SPECTROSCOPY [J]. Chinese Journal of Magnetic Resonance, 1993, 10(2): 165-170.
[15]	Fang Dehui, Liu Dehai, Zheng Xiaoli, Zhang Bide. A PRECISION MARGINAL OSCILLATOR-TYPE NQR SPECTROMETER AND IT'S APPLICATION [J]. Chinese Journal of Magnetic Resonance, 1991, 8(1): 123-130.

A Signal Processing Method for ¹⁴N-Nuclear Quadrupole Resonance Detection of Pentaerythritol Tetranitrate

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