似然比在弹头痕迹检验中的应用  

Application of Likelihood Ratio in Warhead Tracing Test

作　　者：张迪迪[1] 杨军[1] Zhang Didi, Ynng Jun(Criminal Investigation Police University of China, Shengyang, Liaoning. 11003)

机构地区：[1]中国刑事警察学院,辽宁沈阳110035

出　　处：《贵州警官职业学院学报》2018年第1期61-65,共5页Journal of Guizhou Police Officer Vocational College

摘　　要：将似然比的检验方法应用到弹头检验鉴定中,对检验的结果做量化评估。将250枚弹头上1500条膛线的坡膛长度、阳膛线宽度进行测量统计,将测量结果等分为若干区间用柱状图来表示,并计算似然比值。坡膛长度、阳膛线宽度关联似然比之积的值很大,说明证据强度很高。所以,似然比的检验方法可以应用到弹头检验鉴定中。In this paper, the test method of likelihood ratio is applied to the test and appraisal of warhead, and the results of the test are quantified. The length of bore and rifling width were be measured about 1500 rifles on the surface of 250 bullets. Then, the measurement results are divided into several intervals to be represented by a histogram, and the likelihood ratio is calculated. It is important method which associates product of likelihood ratio to the length of bore and rifling width. The more calculation,the more strength of evidence. The likelihood ratio test can be applied into the test and appraisal of warhead.

关 键 词：似然比 弹头痕迹 量化检验 证据强度 

分 类 号：D918.91[政治法律—法学]