基于核四极矩共振的爆炸物探测技术研究进展

doi:10.3969/j.issn.1000-1093.2013.12.013

摘要/Abstract

摘要： 核四极矩共振（NQR）是一种固态射频谱分析技术，可用于检测高危险爆炸物。然而，极低信噪比(SNR)与射频干扰（RFI）制约了NQR技术的实际应用。对微弱NQR信号的参数估计与检测正成为NQR技术中的研究热点。从信号处理的角度，在NQR的概念、信号模型、信号激励方法、干扰抑制及NQR信号检测器等方面做了比较深入的分析，总结了NQR技术在爆炸物探测方面的研究现状，并对NQR技术的发展趋势与技术难点进行了探讨。

关键词: 信息处理技术, 核四极矩共振, 爆炸物探测, 弱信号参数估计与检测, 射频干扰抑制

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

中图分类号:

朱凯然，苏涛，何学辉. 基于核四极矩共振的爆炸物探测技术研究进展[J]. 兵工学报, 2013, 34(12): 1575-1588.

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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