NQR炸药检测系统中激励脉冲拖尾的抑制

波谱学杂志 ›› 2007, Vol. 24 ›› Issue (2): 199-204.

NQR炸药检测系统中激励脉冲拖尾的抑制

郭华民; 张国进; 陈春; 高攀

中国电波传播研究所，山东青岛 266071

收稿日期:2006-06-26 修回日期:2006-08-16 出版日期:2007-06-05 发布日期:2009-12-05
通讯作者: 郭华民

Removal of the Tailing Effects of Transmitting Pulse in a Nuclear Quadrupole Resonance Detecting System for Explosive Detection

GUO Hua-min; ZHANG Guo-jin; CHEN Chun; GAO Pan

China Research Institute of Radiowave Propagation, Qingdao 266071, China

Received:2006-06-26 Revised:2006-08-16 Online:2007-06-05 Published:2009-12-05
Contact: Guo Hua-min

摘要/Abstract

摘要： 介绍了核四极矩共振（Nuclear Quadrupole Resonance简称NQR）炸药检测系统的基本原理及检测过程中面临的如何消除激励脉冲信号拖尾对NQR检测信号的影响问题. 文中采用了在发射电路中增加消振铃电路来消除激励脉冲拖尾的方法，并给出了电路分析和实验结果. 经实际应用验证，该种方法对消除激励脉冲拖尾具有较好的效果，提高了系统的探测能力.

关键词: 脉冲振铃, 核四极矩共振, 阻抗变换, 炸药检测

Abstract: In previous studies we have developed a nuclear quadrupole resonance (NQR) for detection of explosives. However, the tailing effects of the transmitting pulse in these systems represent a serious technical problem, making the detection of NQR signals difficult. In this paper, an electronic circuit was designed to remove the tails of transmitting pulses. The effectiveness of the circuit was verified by both circuit analysis and experiments.

Key words:

nuclear quadrupole resonance, pulse ringing, resistance transform, explosive detection

郭华民; 张国进; 陈春; 高攀. NQR炸药检测系统中激励脉冲拖尾的抑制[J]. 波谱学杂志, 2007, 24(2): 199-204.

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.

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[2]	朱凯然, 吴惠阳, 郑纪彬, 苏涛. 一种改进的微弱NQR信号检测算法[J]. 波谱学杂志, 2012, 29(3): 393-400.
[3]	高攀1,2 ; 金耀辉1 ; 张国进2 ; 周新建2 ; 张小坷2 . 基于核四极矩共振原理的炸药探测方法研究与实验[J]. 波谱学杂志, 2008, 25(3): 371-378.
[4]	房旭民, 张国进, 高攀, 徐政, 徐玉清. 基于Apollo信号控制台的NQR炸药探测方法[J]. 波谱学杂志, 2004, 21(3): 295-303.
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