波前编码光电成像系统猫眼回波分析

量子电子学报 ›› 2020, Vol. 37 ›› Issue (4): 418-429.

• “激光大气传输与探测”专辑 • 上一篇下一篇

波前编码光电成像系统猫眼回波分析

王磊, 孙晓泉, 叶庆

国防科技大学脉冲功率激光技术国家重点实验室, 安徽合肥230037

收稿日期:2020-04-24 修回日期:2020-04-27 出版日期:2020-07-28 发布日期:2020-07-21
通讯作者: E-mail:sun_xq@ustc.edu E-mail:sun_xq@ustc.edu
作者简介:王磊( 1991 - ), 山东烟台人, 博士生, 主要从事激光技术方面的研究。E-mail: 18326063953@163.com

Retroreflection analysis of wavefront coding imaging system

WANG Lei, SUN Xiaoquan, YE Qing

State Key Laboratory of Pulsed Power Laser Technology, National University of Defense Technology, Hefei 230037, China

Received:2020-04-24 Revised:2020-04-27 Published:2020-07-28 Online:2020-07-21

摘要/Abstract

摘要： 鉴于常规成像系统激光防御性能与成像质量之间的矛盾, 设计了一种基于像面离焦的波前编码系统, 分别围绕该技术反激光侦察与抗致盲的机理和效能开展了相关研究工作。首先利用菲涅尔-基尔霍夫衍射理论, 建立了像面离焦波前编码成像系统激光传输模型; 基于该模型, 评估对比了系统各平面的光场分布特征与激光防御性能, 并进一步研究了系统参数的优化规律。结果表明, 对比常规成像系统, 离焦波前编码系统能在保持较好成像质量的同时, 将回波探测器接收功率与像面最大单像素入射功率分别降低两个和一个量级以上, 大幅提升了系统的反激光侦察与抗致盲性能。

关键词: 傅里叶光学, 猫眼效应, 激光防御, 波前编码

Abstract: To achieve a substantial retroreflection reduction accompanied with a superior anti-laser blinding property without suffering significant degradations in imaging quality, a novel defocused wavefront coding imaging system is designed. Relevant studies have been carried out around its mechanism in both anti-laser reconnaissance and anti-blinding. According to the Fresnel-Kirchhoff diffraction theory, the laser propagation through the defocused wavefront coding system is theoretically modeled. In this model, the transmission characteristics along with the laser defense performance are further evaluated, and the parameter optimization rules are proposed. Results show that by reducing the echo-detector receiving power and the maximum incident power per pixel by more than two and one order of magnitude respectively, the defocused wavefront coding system can greatly improve the performance of anti-laser reconnaissance and anti-blinding while maintaining good imaging quality.

Key words: Fourier optics, retroreflection, laser defense, wavefront coding

中图分类号:

O439

王磊, 孙晓泉, 叶庆. 波前编码光电成像系统猫眼回波分析[J]. 量子电子学报, 2020, 37(4): 418-429.

WANG Lei, SUN Xiaoquan, YE Qing. Retroreflection analysis of wavefront coding imaging system[J]. Chinese Journal of Quantum Electronics, 2020, 37(4): 418-429.

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波前编码光电成像系统猫眼回波分析

Retroreflection analysis of wavefront coding imaging system

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