吉林大学学报(理学版) ›› 2019, Vol. 57 ›› Issue (3): 653-657.

• 物理 • 上一篇    下一篇

基于序贯概率比检验的爆炸物检测系统

刘轩1, 郭勇2, 景士伟1, 李明非1,郑彦1, 高亚东1, 年瑞雪1   

  1. 1. 东北师范大学 物理学院, 长春 130024;2. 四川警察学院 刑事技术系, 四川 泸州 646000
  • 收稿日期:2018-02-05 出版日期:2019-05-26 发布日期:2019-05-20
  • 通讯作者: 郭勇 E-mail:95321 2427@qq.com

Explosive Detection System Based on Sequential Probability Ratio Test

LIU Xuan1, GUO Yong2, JING Shiwei1, LI Mingfei1, ZHENG Yan1, GAO Yadong1, NIAN Ruixue1#br#   

  1. 1. School of Physics, Northeast Normal University, Changchun 130024, China;2. Department of Forensic Science, Sichuan Police College, Luzhou 646000, Sichuan Province, China
  • Received:2018-02-05 Online:2019-05-26 Published:2019-05-20
  • Contact: GUO Yong E-mail:95321 2427@qq.com

摘要: 设计一种基于标记中子方法的爆炸物检测系统, 采用ING-27型中子发生器与硅酸钇镥闪烁晶体(LYSO)γ探测器进行探测, 并基于序贯概率比检验(SPRT)方法判别爆炸物. 通过[KG*8]对干奶粉、 硝铵(AMM)和TNT模拟物进行检测, 分析计算测量γ能谱数据中C,N,O三种元素的特征峰, 将所得概率比结果与相应的设定阈值ln A和ln B进行比较. 结果表明, SPRT方法可应用于爆炸物检测.

关键词: 序贯概率比检验(SPRT), 爆炸物, 能谱, 标记中子

Abstract: The explosive detection system based on tagged neutron method was designed. The system used the ING-27 neutron generator and the LYSO γ detector for detection. The explosives were distinguished based on sequential probability ratio test (SPRT) method. The characteristic peaks of C,N, and O elements were analyzed and calculated in the measured γ energy spectrum data of milk powder, ammonium nitrate (AMM) and TNT simulators. The probability ratio results were compared with the corresponding thresholds ln A and ln B. The results show that the SPRT method can be applied to the explosive decision.

Key words: sequential probability ratio test (SPRT), explosive, energy spectrum, tagged neutron

中图分类号: 

  • O571.54