尾流气泡幕对激光的传输特性研究

焦贵金; 张建生; 闫林波; 董敏; 姚远

doi:10.11993/j.issn.2096-3920.2023-0093

尾流气泡幕对激光的传输特性研究

doi: 10.11993/j.issn.2096-3920.2023-0093

西安工业大学基础学院, 陕西西安, 710021

基金项目: 武器装备预研基金项目(51448030101ZK1801); 西安市未央区科技计划(201843).

详细信息

作者简介:
焦贵金(1995-), 男, 在读硕士, 主要研究方向为水下信息光学

中图分类号: TJ630.34; U674
计量
- 文章访问数: 149
- HTML全文浏览量: 83
- PDF下载量: 46
- 被引次数: 0
出版历程
- 收稿日期: 2024-07-25
- 修回日期: 2024-09-15
- 录用日期: 2024-10-13
- 网络出版日期: 2024-03-06

Laser Transmission Characteristics of Wake Bubble Curtain

School of Sciences, Xi’an Technological University, Xi’an 710021, China

摘要

摘要: 舰船在航行过程中会产生尾流区域, 激光穿过气泡尾流区域时会发生散射现象, 通过对散射光的探测和分析, 能够实现检测与识别舰船的目的。文中研究了尾流气泡幕对激光传输特性的影响, 并利用光纤光谱仪探测了尾流气泡幕的光强变化。实验仿真了不同压强下的尾流气泡幕在距离水面5、15和20 cm, 气泡幕厚度分别为10、15 cm时的光强变化, 并探讨了前向散射和后向散射的光强随压强的变化情况。仿真实验结果表明, 随着压强的增大, 光强变化逐渐降低, 气泡浓度与半径也随之增大; 气泡浓度越大, 光强变化越小; 随着压强的增大, 前向散射光强逐渐呈线性降低, 而后向散射光强则会随之增大。
- 尾流气泡幕 /
- 散射光 /
- 气泡浓度
Abstract: In the process of navigation, the ship will produce the wake region, and the scattering phenomenon occurs when the laser passes through the wake region of the bubble. Through the detection and analysis of the scattered light, the ship can be detected and identified. In this paper, the influence of the wake bubble curtain on laser transmission characteristics was investigated, and the light intensity changes of the wake bubble curtain were detected based on a fiber optic spectrometer. The experiment simulated the light intensity change of the wake bubble curtain with a thickness of 10 cm and 15 cm under different pressures at 5, 15, and 20 cm away from the water surface and explored the variation of intensity of forward and backward scattered light with pressure. The experimental results show that with the increases in pressure, the variation of light intensity slows down, and the concentration and the radius of the bubble increase. Higher bubble concentration indicates a smaller variation of light intensity. With the increase in pressure, the intensity of forward scattered light decreases linearly, and the intensity of backward scattered light increases.
- wake bubble curtain /
- scattered light /
- bubble concentration

HTML全文

图 1 海水水分子吸收光谱曲线图

Figure 1. Absorption spectra of water molecules in seawater

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图 2 蒸馏水在可见光谱区域中的体积散射系数和衰减长度

Figure 2. Volume scattering coefficient and attenuation length of distilled water in the visible spectral region

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图 3 尾流气泡幕激光测量装置

Figure 3. Laser measuring wake bubble curtain device

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图 4 不同压强下产生的尾流气泡幕

Figure 4. Wake bubble curtain generated at different pressures

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图 5 气泵未开启与开启瞬间光强变化曲线

Figure 5. Changes of light intensity when the pump is off and the moment it's turned on

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图 6 不同压强下气泡幕光强变化曲线

Figure 6. Changes of bubble curtain light intensity under different pressures

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图 7 水深15 cm处不同压强下气泡幕光强变化曲线

Figure 7. Changes in light intensity of bubble curtains under different pressures at a water depth of 15 cm

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图 8 水深20 cm处不同压强下气泡幕光强变化曲线

Figure 8. Changes in light intensity of bubble curtains under different pressures at a water depth of 20 cm

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图 9 前向散射光强峰值变化

Figure 9. Change of peak intensity of forward scattered light

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图 10 不同压强下后向散射光强变化

Figure 10. Changes of backscattered light intensity under different pressures

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图 11 后向散射光强分峰值变化

Figure 11. Changes of fractional peak value of backscattered light intensity

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表 1 实验仪器型号及参数

Table 1. Models and parameters of experimental instruments

仪器	型号/参数
微型光谱仪	Flame-S-UV-UIS-ES
Oceanview	V. 1.6.7
光纤探头	QP600-2-UV-UIS 长2 m
He-Ne 激光器	波长632.8 nm
微孔陶瓷管	外径68 mm、内径30 mm、长750 mm、膜孔径10 μm
高压气泵	550W-8L
玻璃水池	高80 cm、宽80 cm、长160 cm、厚12 mm

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