红外激光双模复合导引头分离孔径式光学系统性能研究

范俊; 李冬梅; 魏靖彪; 黄海; 陈策

doi:10.15892/j.cnki.djzdxb.2023.03.014

弹箭与制导学报 >

2023 , Vol. 43 >Issue 3: 93 - 98

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2023.03.014

红外激光双模复合导引头分离孔径式光学系统性能研究

范俊 ¹ ,
李冬梅 ² ,
魏靖彪 ¹ ,
黄海 ¹ ,
陈策 ¹

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¹ 陆军航空兵研究所,北京 101121
² 中国科学院半导体研究所,北京 100083

范俊(1982—),男,工程师,博士,研究方向:空面导弹系统及应用。

收稿日期: 2022-10-25

网络出版日期: 2025-02-07

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Research on the Separated-aperture Optical System of Infrared Laser Dual-Mode Seeker

FAN Jun ¹ ,
LI Dongmei ² ,
WEI Jingbiao ¹ ,
HUANG Hai ¹ ,
CHEN Ce ¹

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¹ Army Aviation Research Institute,Beijing 101121,China
² Institute of Semiconductors,Chinese of Academy of Sciences,Beijing 100083,China

Received date: 2022-10-25

Online published: 2025-02-07

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摘要

红外激光双模复合制导是空面导弹未来发展的趋势之一。相比单模系统,红外激光双模复合导引头作用距离更远、抗干扰能力更强、环境适应性更好。文中分别从调制传递函数、渐晕系数、最小可分辨温差、噪声等效温差等性能指标对共孔径式和分离孔径式光学系统两种设计方案进行了仿真和对比实验,仿真和实验结果表明,相对共孔径式光学系统,分离孔径式光学系统在各项指标中均有明显的提升。分离孔径式光学系统相对于共孔径式光学系统,在33线对数条件下MTF提升了75%,无渐晕光线比例增加了25%,NETD和MRTD分别降低了61%和65%。此外,对分离孔径设计中激光光学子系统的测角线性度进行了仿真分析。结果表明,分离孔径式设计不会降低激光光学子系统的测角线性度。

关键词： 双模复合导引头; 分离孔径式; 光学系统

本文引用格式

范俊 , 李冬梅 , 魏靖彪 , 黄海 , 陈策 . 红外激光双模复合导引头分离孔径式光学系统性能研究[J]. 弹箭与制导学报, 2023 , 43(3) : 93 -98 . DOI: 10.15892/j.cnki.djzdxb.2023.03.014

Abstract

Infrared laser dual-mode combined guidance is one of the trends in the future development of air-to-surface missiles. Compared to the single-mode system, the infrared laser dual-mode composite seeker has a more extended range, robust anti-interference capability, and better environmental suitability, which can satisfy the needs of future national defense technology. Infrared laser dual-mode combined optics are divided into separated-aperture and shared-aperture optics. This paper designed and compared the effects of these two designs on the infrared subsystem from the parameters of the Modulation Transfer Function (MTF), Vignetting coefficient, Minimum Resolvable Temperature Difference (MRTD), and Noise Equivalent Temperature Difference (NETD). The results showed that the separated-aperture optical system was superior to the shared-aperture optical system. Compared to the shared-aperture optics, the separated-aperture optics’ MTF has increased by 75% in 33-line logarithmic conditions, the proportion of non-vignetted rays is increased by 25%, and the NETD and MRTD are reduced by 61% and 65%, respectively. In addition, the Angle measurement error characteristics of the laser optical subsystem in the separated-aperture design were simulated and analyzed. The results show that the separation aperture design will not worsen the laser optical subsystem’s linearity.

Key words： dual-model seeker; separated-aperture; optical system

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