Active laser detection of cat's eye effect for space-based off-axis three mirror optical system

LU Jun; WANG Ting-feng; LI Yuan-yang; WANG Rui; SUN Tao; GUO Jin

doi:10.3788/OPE.20152307.1948

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Active laser detection of cat's eye effect for space-based off-axis three mirror optical system

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- Active laser detection of cat's eye effect for space-based off-axis three mirror optical system
- Optics and Precision Engineering Vol. 23, Issue 7, Pages: 1948-1956(2015)
- 作者机构：
  
  1. 中国科学院大学北京,中国,100049
  2. 中国科学院长春光学精密机械与物理研究所激光与物质相互作用国家重点实验室,吉林长春 130033
  3. 第二炮兵装备研究院北京,100085
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20152307.1948
  CLC： TH703;V556.7
- Received：23 June 2014，
  
  Revised：19 August 2014，
  
  Published：25 July 2015
- 稿件说明：
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陆君, 王挺峰, 李远洋等. 空间激光主动探测离轴三反系统的猫眼效应[J]. 光学精密工程, 2015,23(7): 1948-1956

LU Jun, WANG Ting-feng, LI Yuan-yang etc. Active laser detection of cat's eye effect for space-based off-axis three mirror optical system[J]. Editorial Office of Optics and Precision Engineering, 2015,23(7): 1948-1956
陆君, 王挺峰, 李远洋等. 空间激光主动探测离轴三反系统的猫眼效应[J]. 光学精密工程, 2015,23(7): 1948-1956 DOI： 10.3788/OPE.20152307.1948.

LU Jun, WANG Ting-feng, LI Yuan-yang etc. Active laser detection of cat's eye effect for space-based off-axis three mirror optical system[J]. Editorial Office of Optics and Precision Engineering, 2015,23(7): 1948-1956 DOI： 10.3788/OPE.20152307.1948.

摘要

采用光线追迹法

分析了空间环境下离轴三反结构系统的猫眼效应。给出了离轴三反系统的像面倾斜、视场和离焦对猫眼回波效率和发散角的影响

证明了离轴三反系统像面倾斜量是决定能否发生猫眼效应的主要因素。提出利用阈值法实现激光主动探测猫眼信号的基本原理

并结合高阶余弦漫反射模型

分析了目标漫反射信号对猫眼信号检测的影响。估算了20 km到120 km探测距离下

理论上所需不同光束质量激光的最小脉冲能量。仿真表明

当发射光束的全角发散角为0.3 mrad时

50 km和120 km探测距离下所需的最小激光脉冲能量分别为0.7 mJ和3.1 mJ。最后

通过原理实验

验证了空间激光主动探测法探测目标"猫眼"效应的可行性。

Abstract

The cat's eye effect of a space-based Off-axis Three Mirror (OTM) system was analyzed by using the ray tracing method. The effects of image tilt

views of field and the defocus of the OTM system on the echo efficiency and beam divergence angle of cat's eye retro-reflection were given. Then

it pointed out that the image tilt size of the OTM system is a main factor to produce cat's eye echo wave. A threshold method was proposed to actively detect the cat's eye signals

then the influence of diffuse reflection from a target on the detection of cat's eye signals was analyzed by combining the high order cosine scattering mode. The minimum laser pulse energy requirements for 20 km to 120 km detection range under different transmissive beam qualities were given theoretically. The simulation results show that when the beam divergence entire angle is 0.3 mrad

the minimum laser pulse energy requirements at the detection distances of 50 km and 120 km are 0.7 mJ and 3.1 mJ

respectively. Finally

an experiment was carried out to verify the feasibility of the active detection of OTM systems with the cat's eye effects.

关键词

Keywords

references

葛成良, 黄志伟, 季云松, 等. 基于"猫眼效应"的目标识别[J]. 强激光与离子束, 2003,15(7): 632-634. GE CH L, HUANG ZH W, JI Y S, et al.. Target classification with "cat eye effect" [J]. High Power Laser and Particle Beams, 2003, 15(7): 632-634. (in Chinese)

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