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Computerized system and methods of ballistic analysis for gun identifiability and bullet-to-gun classifications
Computerized system and methods of ballistic analysis for gun identifiability and bullet-to-gun classifications
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机译:弹道分析的计算机系统和方法,用于枪支可识别性和子弹到枪支分类
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摘要
A computerized system and methods of ballistic analysis involves comparing land impressions on a plurality of control bullets and computing correlation coefficients corresponding to the land-to-land comparisons in all possible relative orientations. A set of matching coefficients is identified for each bullet pair, and the set of matching coefficients is statistically compared to a set of non-matching coefficients. The gun is concluded to be identifiable where the sets of matching coefficients and non-matching coefficients are not statistically undistinguishable. To evaluate whether an evidence bullet was fired by a suspect gun, land impressions on an evidence bullet are compared with land impressions on a plurality of control bullets in all possible relative orientations, and correlation coefficients are computed for each land-to-land comparison to identify a set of questioned coefficients. The evidence bullet is concluded as having been fired by the suspect gun in response to a statistical evaluation that the set of questioned coefficients is statistically equivalent to a set of matching coefficients.
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