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原向反射式大面积三角形探测光幕灵敏度分布

段晨曦 孙忠辉 李海清 倪晋平 武志超

段晨曦, 孙忠辉, 李海清, 倪晋平, 武志超. 原向反射式大面积三角形探测光幕灵敏度分布[J]. 应用光学.
引用本文: 段晨曦, 孙忠辉, 李海清, 倪晋平, 武志超. 原向反射式大面积三角形探测光幕灵敏度分布[J]. 应用光学.
DUAN Chenxi, SUN Zhonghui, LI Haiqing, NI Jingping, WU Zhichao. Sensitivity distribution of large area triangular detection light screen with original reflection[J]. Journal of Applied Optics.
Citation: DUAN Chenxi, SUN Zhonghui, LI Haiqing, NI Jingping, WU Zhichao. Sensitivity distribution of large area triangular detection light screen with original reflection[J]. Journal of Applied Optics.

原向反射式大面积三角形探测光幕灵敏度分布

基金项目: 国家自然科学基金(61471289);陕西省教育厅重点实验室项目(20JS057);
详细信息
    作者简介:

    段晨曦(1996—),男,博士研究生,主要从事光电测试技术研究。E-mail:cherokeedcx@126.com

    通讯作者:

    倪晋平(1965—),男,博士,教授,主要从事兵器试验与测试技术,光电测试与仪器研究。E-mail:nijp6504@263.net

  • 中图分类号: TN206

Sensitivity distribution of large area triangular detection light screen with original reflection

  • 摘要: 分体式大靶面测试系统的探测光幕灵敏度直接影响飞行弹丸速度测量的精度。可在散布不大的情况下,使用反射膜与激光器代替矩形大面积测试系统中的人工光源,简化测试系统。对新建的三角形探测光幕的灵敏度进行了分析,综合考虑激光器在不同传播距离处的光强度衰减、空间的非均匀性分布及反射膜逆反射系数和镜头离轴效应等因素,采用数值仿真和实弹试验的方法,将同一弹径的弹丸穿过光幕不同位置时的灵敏度等效到同一基准点进行归一化分析。结果显示,镜头离轴效应对灵敏度影响最大,激光器空间非均匀性分布影响最小。在3.5 m×2 m(宽×高)的直角三角形探测光幕区域进行实弹试验,其结果与仿真结果一致,距镜头越近,灵敏度越高;反之越低。研究结果可为类似原向反射式大面积探测光幕的工程设计提供参考。
  • 图  1  原向反射式大面积三角形探测光幕结构示意图

    Fig.  1  Schematic diagram of the structure of the original reflective large area triangular detector light screen

    图  2  探测光幕光强度传播示意图

    Fig.  2  Schematic diagram of light intensity propagation of detection light screen

    图  3  4个影响因子变化曲线

    Fig.  3  Four impact factor change curves

    图  4  投射到反射膜上在镜头处汇聚的光强度Iˊ0变化曲线

    Fig.  4  The Iˊ0 change curve of light intensity projected onto the reflective film that converges at the lens

    图  5  探测光幕特征选段选取示意图

    Fig.  5  Schematic diagram of selection of feature selection for detection light screen

    图  6  特征线段上的灵敏度变化曲线

    Fig.  6  Sensitivity change curve on feature segments

    图  7  探测光幕灵敏度δ´空域分布

    Fig.  7  Detection light screen sensitivity δ´ airspace distribution

    图  8  主要射击区域灵敏度δ´分布

    Fig.  8  Sensitivity δ´ distribution in the main firing area

    图  9  AAʹ上归一化数值曲线

    Fig.  9  Normalized numerical curve on AAʹ

    图  10  BBʹ上归一化数值曲线

    Fig.  10  Normalized numerical curve on AAʹ

    图  11  主要射击区域内射击测试点位示意图

    Fig.  11  Schematic diagram of the firing test point in the main firing area

    图  12  主要射击区域试验结果图

    Fig.  12  The test results in the main firing areas

    表  1  特征线段上模拟信号电压幅值数据结果

    Table  1  Analog signal voltage amplitude data results on characteristic line segments V

    竖直高度/m水平距离/m
    0.601.201.752.302.90
    0.05----3.00----
    0.19----1.72----
    0.335.041.561.481.441.4
    0.56----1.32----
    0.74----1.04----
      注:--为非特征线段上测试点。
    下载: 导出CSV

    表  2  主要射击区域模拟信号电压幅值数据

    Table  2  Analog signal voltage amplitude data in the main firing area V

    竖直高度/m水平距离/m
    1.471.611.751.892.03
    0.01----3.00----
    0.19--2.161.721.64--
    0.331.561.481.481.441.4
    0.56--1.361.320.84--
    0.74----1.04----
      注:--为主要射击区域外测试点。
    下载: 导出CSV
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  • 收稿日期:  2022-04-27
  • 修回日期:  2022-05-24
  • 网络出版日期:  2022-05-31

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