基于序贯概率比检验的爆炸物检测系统  

Explosive Detection System Based on Sequential Probability Ratio Test

作　　者：刘轩 郭勇[2] 景士伟[1] 李明非[1] 郑彦 高亚东 年瑞雪 LIU Xuan;GUO Yong;JING Shiwei;LI Mingfei;ZHENG Yan;GAO Yadong;NIAN Ruixue(School of Physics,Northeast Normal University,Changchun 130024,China;Department of Forensic Science,Sichuan Police College,Luzhou 646000,Sichuan Province,China)

机构地区：[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

出　　处：《吉林大学学报（理学版）》2019年第3期653-657,共5页Journal of Jilin University:Science Edition

基　　金：科技部国家重大科学仪器设备开发专项基金(批准号:2013YQ04086101);吉林省科技发展计划项目(批准号:20190303101SF);四川省高校重点实验室开放课题;四川省教育厅重点项目(批准号:16ZA0325)

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.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.

关 键 词：序贯概率比检验(SPRT) 爆炸物 能谱 标记中子 

分 类 号：O571.54[理学—粒子物理与原子核物理]