【作者】 刘素萍； 仁立学； 胡广春； 胡永波； 郝樊华； 储诚胜；

【Author】 Liu Suping~1 Ren Lixue~2 Hu Guangchun~1 Hu Yongbo~1 Hao Fanhua~1 Chu Cunshen~1 (1.Institute of Nuclear Physics and Chemistry,Mianyang,Sichuan,621900) (2.Southwest University of Science and Technology,Mianyang,Sichuan,621010)

【机构】 核物理与化学研究所； 西南科技大学；

【摘要】 夹角余弦法已广泛应用于中药指纹图谱相似度的计算,有人也曾尝试将夹角余弦法应用到核弹头γ辐射模板识别技术中。为了研究夹角余弦法用于γ辐射源一致性判定的可行性,我们用实验室γ辐射源进行了系列实验。实验中,我们采用能谱指纹中的极大值信息作为特征量来构建模板向量,并用夹角余弦计算能谱指纹的相似度。研究表明,夹角余弦法不能有效地判断复杂γ辐射体源的一致性,自然地,不能完全满足核弹头(或核部件)模板识别技术的要求。更多还原

【Abstract】 Cosine of the angle(CA)has been widely used to estimate the similarity of the chromatogram fingerprints.Some people had tried to merge CA into the nuclear weahead gamma radiation template indentification technology.To study the feasibilty of using CA to judge the consistance of gamma radiation sources.,we conducted some experiments using laboratory gamma radiation sources.In these experiments, we used the maximum information of spectral fingerprints to build up the template vectors,and used CA to calculate the similarity of the spectral fingerprints.The study shows that CA can not efficiently judge the consistance of complex gamma radiation bulk sources,therefore,it can not fully meet the requirements of nuclear warhead(or component)template identification technology.更多还原