Acta Physica Sinica, Volume. 68, Issue 7, 070601-1(2019)

Influence of single-beam expanding scanning laser circumferential detection system parameters on detection capability

Bing-Ting Zha1...2,*, Hai-Lu Yuan1, Shao-Jie Ma1,2, and Guang-Song Chen12 |Show fewer author(s)
Author Affiliations
  • 1Key Discipline Laboratory of Intelligent Ammunition Technology National Defense, Nanjing University of Science and Technology, Nanjing 210094, China
  • 2Changshu Research Institute Co.Ltd, Nanjing University of Science and Technology, Changshu 215513, China
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    Figures & Tables(14)
    The structure of a single beam expanding beam scanning laser periscope detection system.单光束扩束扫描激光周视探测系统结构
    Schematic diagram of detection target of single-beam pulsed laser circumferential scan detection system.单光束脉冲激光周向扫描探测系统探测目标示意图[11]
    Pulse beam view in the positive direction of the x-axis.沿x轴正方向脉冲光束视图
    Projection of adjacent pulsed laser beam on plane M.相邻脉冲激光束在面M上的投影
    Geometrical relationship between the laser beam and the projected image.发射激光束与投影图像几何关系
    The echo power with different K(R), R and : (a) ; (b) ; (c) 回波功率Pr与K(R), R, 之间的关系 (a) ; (b) ; (c)
    Mathematical model of K(R): (a) The position of the center line of the beam; (b) the K(R) model when the left side of the beam intersects the target; (c) the K(R) model when the left side of the beam is separated from the target.K(R)数学模型 (a)光束中心线位置示意图; (b)光束左边沿线与目标相交时K(R)模型; (c)光束左边沿线与目标相离时K(R)模型
    The relationship between K(R) and , and : (a) The relationship between K(R) and , ; (b) the influence curve of , and on K(R).K(R)与, 和之间的关系 (a) , 与K(R)的关系; (b) , 和对K(R)的影响曲线
    Effects of pulse frequency f, beam angle , and beam incidence angle on targets with different diameters: (a) ; (b) ; (c) .脉冲频率f、光束角和光束入射角对不同目标直径的影响 (a) ; (b) ; (c)
    Maximum angle between adjacent pulse beams: (a) The relation curve between f1 and the position of the target circle; (b) value of and .最大相邻脉冲光束夹角(a) f1与目标圆位置关系曲线; (b) 与取值计算
    Influence of and on echo power. (a) ; (b) ; (c) .和对系统回波功率的影响 (a) ; (b) ; (c)
    • Table 1.

      Simulation parameters of the detection system.

      探测系统仿真参数

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      Table 1.

      Simulation parameters of the detection system.

      探测系统仿真参数

      ParameterValueParameterValue
      Pt/W 70Pmin/ ${\text{μ}}$W 5
      vm/m·s–1700vt/m·s–1200
      Lt/m 3$\eta$0.9
      Ar/m20.00031$\sigma$/m–10.00054
      $\theta_{\simfont\text{边界}}$/rad 0.26$\xi_{\simfont\text{边界}}$/rad ${\text{π}}/2$
    • Table 2.

      Calculate the minimum pulse frequency and beam angle system parameters

      计算最低脉冲频率及光束角系统参数

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      Table 2.

      Calculate the minimum pulse frequency and beam angle system parameters

      计算最低脉冲频率及光束角系统参数

      ParameterValueParameterValue
      Pt/W 70Dt/m 0.18
      R/m 6${\alpha _{\rm{t}}}$${\text{π}}/3$, ${\text{π}}/4$, ${\text{π}}/6$
    • Table 3. nmin, , and fmin at different incident angles . 不同入射角 下的nmin, , 以及fmin

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      Table 3. nmin, , and fmin at different incident angles . 不同入射角 下的nmin, , 以及fmin

      入射角扩束前扩束后
      ${\alpha _{\rm{t}}}$/rad $\xi$/rad $\theta$/rad kf/Hz ${\xi _{\max}}$/rad ${\theta _{\max }}$/rad kminfmin/Hz
      ${\text{π}}/3$0.03450.0025182544110.24170.2417267798.74
      ${\text{π}}/4$0.04220.0025149444250.25130.2513257500.82
      ${\text{π}}/6$0.05980.0025105314110.25130.2513257500.82
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    Bing-Ting Zha, Hai-Lu Yuan, Shao-Jie Ma, Guang-Song Chen. Influence of single-beam expanding scanning laser circumferential detection system parameters on detection capability[J]. Acta Physica Sinica, 2019, 68(7): 070601-1

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    Paper Information

    Category:

    Received: Oct. 16, 2018

    Accepted: --

    Published Online: Oct. 29, 2019

    The Author Email:

    DOI:10.7498/aps.68.20181860

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