Backscattering polarization characteristics of pulsed laser fuze with coaxial optical system in water fog

CHEN Hui-min; LIU Xin-yang

doi:10.3788/OPE.20152303.0626

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Backscattering polarization characteristics of pulsed laser fuze with coaxial optical system in water fog

更新时间：2020-08-13

- Backscattering polarization characteristics of pulsed laser fuze with coaxial optical system in water fog
- Optics and Precision Engineering Vol. 23, Issue 3, Pages: 626-631(2015)
- 作者机构：
  
  1. 北京理工大学机电动态控制重点实验室北京,100081
  2. 北京理工大学爆炸科学与技术国家重点实验室北京,100081
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20152303.0626
  CLC： TJ430+9.2;TJ430
- Received：19 June 2014，
  
  Revised：09 August 2014，
  
  Published：25 March 2015
- 稿件说明：
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陈慧敏, 刘新阳,. 收发同轴脉冲激光引信在水雾中的后向散射偏振特性[J]. 光学精密工程, 2015,23(3): 626-631

CHEN Hui-min, LIU Xin-yang,. Backscattering polarization characteristics of pulsed laser fuze with coaxial optical system in water fog[J]. Editorial Office of Optics and Precision Engineering, 2015,23(3): 626-631
陈慧敏, 刘新阳,. 收发同轴脉冲激光引信在水雾中的后向散射偏振特性[J]. 光学精密工程, 2015,23(3): 626-631 DOI： 10.3788/OPE.20152303.0626.

CHEN Hui-min, LIU Xin-yang,. Backscattering polarization characteristics of pulsed laser fuze with coaxial optical system in water fog[J]. Editorial Office of Optics and Precision Engineering, 2015,23(3): 626-631 DOI： 10.3788/OPE.20152303.0626.

摘要

考虑激光引信的探测性能易受大气气溶胶的散射作用和吸收作用的影响

本文基于Mie散射理论

采用Monte Carlo方法模拟了脉冲激光在水雾中的后向散射偏振特性。对1~10 μm的19种粒径的水雾进行仿真

获得了典型波长和水雾粒径下激光后向散射的平均偏振对比度。建立了收发同轴脉冲激光在水雾下的后向散射偏振特性实验系统

通过改变超声波加湿器的浓度

得到了5种典型粒径的模拟水雾粒子

并对其进行了实验。研究结果表明:当水雾粒径在1~10 μm时

激光后向散射的平均偏振对比度为0.30~0.65

实验结果与仿真结果具有较好的一致性。得到的结果证明了激光后向散射理论模型和Monte Carlo仿真的正确性

为激光引信的抗水雾干扰研究提供了理论支撑。

Abstract

The performance of laser fuze is vulnerable to be scattered and absorbed by atmospheric aerosols while it propagates in atmosphere. In this work

the backscattering polarization characteristics of a pulsed laser in water fog were researched by using Mie scattering theory and Monte Carlo simulation. By simulating 19 kinds of fog particles with diameters of 1—10 μm

the Mean Contrast of Polarization (MCOP) of backscattering laser was obtained for typical wavelengths and diameters. An experimental system for the backscattering polarization characteristics of a coaxial pulsed laser was established in water fog. Five kinds of man-made fog particles with different diameters were obtained by changing the concentration of an ultrasonic humidifier. The man-made fog particles were measured experimentally

and the results show when fog particle diameters are in 1—10 μm

the MCOP of laser backscattering is from 0.30 to 0.65. Experimental results agree well with the simulation data

thus verify the validity of laser backscattering theory model and Monte Carlo simulation

and provide a method for laser fuze anti-interference of clouds and fogs.

关键词

Keywords

references

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