基于PRISM的隐身飞机红外辐射特性研究  

Study on infrared radiation characteristics of stealth aircraft based on PRISM

作　　者：王明章 李永强 卫临方 刘德连[1] 黄曦[1] 马向超 李想[1] 丁国鹏 WANG Ming-zhang;LI Yong-qiang;WEI Lin-fang;LIU De-lian;HUANG Xi;MA Xiang-chao;LI Xiang;DING Guo-peng(School of Optoelectronic Engineering,Xidian University,Xi'an 710071,China)

机构地区：[1]西安电子科技大学光电工程学院,陕西西安710071

出　　处：《激光与红外》2025年第4期579-587,共9页Laser & Infrared

基　　金：中央高校基本科研业务费专项资金项目(No.ZYTS25280);国家自然科学基金项目(No.62274124);西安市飞行器光学成像与测量技术重点实验室基金项目(No.2023-005)资助。

摘　　要：作为现代战争中首屈一指的制空武器,隐身飞机具备优异的气动性能和极高的战场隐蔽能力,其探测识别技术是现代光电领域的重要研究内容。尽管隐身设计能够显著抑制目标电磁特征信号,但由于高速飞行时蒙皮气动热效应、羽流未遮挡部分仍具有可观的红外辐射水平,这为隐身飞机的红外探测提供了关键依据。本文面向现代复杂电磁环境中光电对抗技术需求,开展隐身飞机红外辐射特性计算及仿真研究,基于自主化的物理可信光电场景仿真系统PRISM,对典型隐身飞机进行几何建模、蒙皮温度场计算、羽流物理场计算,获得目标零视距红外辐射特性;结合大气辐射传输效应分析,计算得到探测距离为20km处的目标红外辐射特性。计算结果表明:1)在不同红外探测波段下,目标前向、后向辐射强度极小值分别位于0°、180°探测幅角方向;2)在目标非加力飞行状态下,采用长波8~12μm探测获得的目标辐射强度高于中波探测的结果;在0°探测幅角方向,长波红外辐射强度高于中波约140W/Sr;3)在目标加力飞行状态下,尾向探测时,采用中波3~5μum探测获得的目标辐射强度显著高于长波探测的结果;在0°探测幅角方向,长波红外辐射强度高于中波约400W/Sr;4加力飞行状态下的蒙皮气动热效应更为显著,在0°探测幅角方向,长波红外辐射强度较非加力状态提升约330W/Sr。仿真结果表明,采用中波3~5μm、长波8~12μm探测波段,PRISM系统对于不同飞行状态下的隐身飞机目标均具有良好的红外成像仿真能力,可支撑第五代隐身飞机的红外探测及光电对抗研究。As the leading air control weapon in modern warfare,stealth aircraft has excellent ability of aerodynamic performance and extremely high battlefield concealment.Nevertheless,the aerodynamic thermal effect of aircraft skin and the unshielded part of exhaust plume still have a considerable infrared radiation level with the stealth aircraft moving at high speed,which provides an important basis for the infrared detection of the stealth aircraft.In this paper,the infrared radiation characteristics of stealth aircraft are studied for the photoelectric countermeasure technology in modern complex battlefield.Based on the in-house developed physically-reasonable photoelectric simulation system PRISM,the typical stealth aircraft geometric modeling,the skin temperature field calculation,and the exhaust plume physical field calculation are performed to obtain the zero line-of-sight radiation characteristics of the target.Combined with analysis of the atmospheric radiance transfer effect,the infrared radiation characteristics of the target at the detection distance of 20 km are calculated.The calculation results show that:1)Using different infrared detection bands,the minimum values of the forward and backward radiation intensities of the target are located at the detection azimuth angles of 0°and 180°,respectively;2)At the non-afterburning flight state,the target radiation intensity obtained by long-wave 8~12μm detection is higher than that of mid-wave detection;at the detection azimuth angle of 0°,the long-wave infrared radiation intensity is approximately 140 W/Sr higher than that of mid-wave;3)At the afterburning flight state,while detecting from the tail direction,the target radiation intensity obtained by mid-wave 3~5μm detection is significantly higher than that of long-wave detection;at the detection azimuth angle of 0°,the long-wave infrared radiation intensity is approximately 400 W/Sr higher than that of mid-wave;4)The aerodynamic heating effect on the skin is much more significant at the afterburning flight

关 键 词：隐身飞机 蒙皮 羽流 红外辐射特性 

分 类 号：TN219[电子电信—物理电子学] O432[机械工程—光学工程]