手枪子弹轨迹重建的垂直组件中的系统错误
Wim Kerkhoff1, Frits R Broekhuis2, Erwin J A T Mattijssen1
1Netherlands Forensic Institute, Ministry of Justice and Security, The Hague, The Netherlands.
Journal of forensic sciences
|December 1, 2023
概括
法医枪支分析必须考虑子弹掉落,这是由重力引起的系统性错误. 这项研究量化了手枪高达100米的子弹落下,落下角度和垂直偏移,为轨迹重建提供了关键数据.
科学领域:
- 法医科学 法医科学 法医科学
- 弹道学 弹道学 弹道学
- 物理 物理学 物理
背景情况:
- 在法医调查中,重建子弹轨迹至关重要.
- 引力引力引入垂直轨道组件中的系统错误.
- 了解子弹掉落对于准确的射击事件分析至关重要.
研究的目的:
- 量化子弹落在手枪子弹轨迹上的影响.
- 在轨迹重建中建立误差大小的参考框架.
- 提出将子弹路径建模为直线的门距离.
主要方法:
- 计算了子弹的落下,落下角度和垂直偏移.
- 测试了10种手枪/弹药组合.
- 扩展分析到最多100米的距离.
主要成果:
- 对各种手枪子弹的量化子弹落下,落下角度和垂直偏移.
- 确定在拟议的门距离下,子弹落下和垂直偏移低于5厘米.
- 在这些值处,落下角度保持在0.3°以下.
结论:
- 建议20米和30米作为直线轨迹建模的保守门,分别为亚声波/超声波和超声波手枪子弹.
- 结果为法医枪支检查人员提供数据,以评估轨迹重建错误.
- 准确的重建需要考虑子弹轨道上的重力效应.
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