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宗思光; 张鑫; 杨劭鹏; 段子科; 陈报

doi:10.37188/CO.2023-0043

365彩票官网网页版

doi: 10.37188/CO.2023-0043

宗思光 ^1,,
张鑫 ^2,,
杨劭鹏 ¹,
段子科 ¹,
陈报 ¹

1.
海军工程大学电子工程学院, 湖北武汉 430034
2.
海军航空大学青岛校区, 山东青岛 266041

基金项目:国防科研基金（No. 2019-JCJQ-JJ-056)

详细信息

作者简介:
宗思光（1979—），男，河南开封人，博士，2009年于海军工程大学获得工学博士学位，目前为海军工程大学电子工程学院副教授，主要从事信息对抗技术、光电对抗、水下激光探测、激光通信、激光致声等方面的研究。E-mail：[email protected]

张　鑫（1998—），男，山东临沂人，硕士，2023年于海军工程大学获得工学硕士学位，目前为海军航空大学青岛校区助教，主要从事信息对抗技术、水下激光探测、光电对抗等方面的研究。E-mail： [email protected]

中图分类号:TN249
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- 收稿日期: 2023-03-13
- 修回日期: 2023-05-15
- 网络出版日期: 2023-07-13

365彩票官网网页版

1.
College of Electronic Engineering, Naval University of Engineering, Wuhan 430034, China
2.
Qingdao Branch, Naval Aeronautical University, Qingdao 266041, China

Funds:Supported by the National Defense Foundation of China（No. 2019-JCJQ-JJ-056)

摘要

摘要:
为了提高激光光尾流制导距离和探测信噪比，研究不同距离、不同气泡尺度、不同气泡数密度和不同气泡层厚度的气泡目标的后向散射特性具有重要的理论和应用价值。采用蒙特卡洛仿真和室内实验研究了前述舰船尾流气泡目标的激光后向散射特性。结果表明：近距离的气泡要比远距离的气泡更容易被检测到；在气泡数密度为10²~10⁸ m⁻³，气泡层厚度大于0.05 m时，大尺度和小尺度气泡始终存在回波信号，气泡层厚度小于0.05 m时无回波信号，此时，气泡层厚度特性对气泡后向散射的影响最大；在气泡数密度为10⁹ m⁻³，气泡层厚度为0.05 m以下时，大尺度气泡回波信号脉冲宽度会展宽。在这种情况下，气泡数密度和尺度特性对气泡后向散射的影响最大。搭建了水下典型气泡尺度下的激光后向散射测量系统，验证了不同舰船尾流气泡目标特性对激光后向探测系统的影响。本文研究成果可为舰船尾流激光探测工程提供支撑。
- 舰船尾流 /
- 蒙特卡洛 /
- 后向散射 /
- 目标特性
Abstract:
In order to improve the laser wake guidance distance and the detection signal-to-noise ratio, it is of great theoretical and practical value to study the backscattering characteristics of bubble targets with different distances, bubble sizes, bubble number densities, and bubble layer thicknesses. The laser backscattering characteristics of ship wake bubble targets with different distances, scales, numerical densities, and thicknesses are studied using Monte Carlo simulations and indoor experiments. When the bubble density is 10²−10⁸ m⁻³ and the thickness of the bubble layer is greater than 0.05 m, there is always an echo signal for both large- and small-scale bubbles. When the thickness of the bubble layer is less than 0.05 m, no echo signal is detected. At this situation, the thickness of the bubble layer is the greatest impact factor on the backward scattering of bubbles. When the bubble number density is 10⁹ m⁻³ and the thickness of the bubble layer is below 0.05 m, the pulse width of the large-scale bubble echo signal widens. The number density and scale characteristics of the bubbles have the greatest impact on the backscattering of bubbles. A laser backscattering measurement system at the scale of typical underwater bubbles is built to verify the influence of different ship wake bubble characteristics on the laser backscattering detection system, which can provide support for the ship wake laser detection project.
- ship wake /
- Monte Carlo /
- backscattering /
- target characteristics

HTML全文

图 1 单个光子两次碰撞散射坐标系

Figure 1. Coordinate systems for single photon double collision scattering

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图 2 光子模拟运动程序图

Figure 2. Flow chart of photon simulated motion

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图 3 不同距离下气泡后向散射回波信号

Figure 3. Backscattering echo signal of bubble under different distances

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图 4 不同气泡密度下的后向散射回波信号

Figure 4. Backscattering echo signal of bubble under different bubble densities

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图 5 不同气泡厚度下的后向散射回波信号

Figure 5. Backscattering echo signal of bubble under different bubble thicknesses

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图 6 不同气泡尺寸下的后向散射回波信号

Figure 6. Backscattering echo signal of bubble with different bubble sizes

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图 7 不同气泡目标特性下的后向散射回波信号

Figure 7. Backscattering echo signals with different bubble target characteristrics

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图 8 实验系统设计

Figure 8. Experimental system design

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图 9 (a) 不同气泡距离和(b)不同气泡层厚度下的气泡激光后向散射信号强度

Figure 9. Laser backscattering signal intensities under (a) different bubble distances and (b) different bubble thicknesses

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图 10 不同气泡厚度和数密度下水体回波峰值幅度

Figure 10. Peak echo amplitude of water body under different bubble thicknesses and different densities

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图 11 (a) 不同气泡距离；(b) 不同气泡数密度；(c) 不同气泡层厚度下的水体激光后向散射信号强度

Figure 11. Laser backscattering signal intensities of water body under (a) various bubble distances, (b) different bubble densities and (c) different bubble thicknesses

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图 12 不同距离下水体激光后向散射信号变化。（a）峰值幅度；（b）脉冲宽度

Figure 12. Variation of laser backscattering signal of water body at different distances. (a) Signal peak amplitude; (b) pulse width

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