摘要
针对机动性能好、突防能力强的红外成像制导系统,利用极薄金属片可以快速加热升温与自然降温的特性,提出了一种适用于末制导阶段的新型红外干扰方法。建立了金属片加热升温及自然降温过程的数学模型,确定了金属片结构形式及材料特性;设计了结构简单、密封环境良好的红外点源干扰装置。试验结果表明:金属片优选2μm厚的镍片,其加热时间为50 ms (500~1 000℃),自然降温时间为75 ms (1 000~500℃),可以满足帧频要求(10 Hz);并实现了温度规律性的周期变化。分析与试验结果证实了红外点源干扰装置能够模拟红外辐射特性的快速变化,可为末制导阶段干扰提供一种新思路。
Aiming at the infrared imaging guidance system with good maneuverability and strong penetration ability,a new type of infrared interference method was proposed by using the characteristics of ultra-thin metal sheets that can quickly heat up and naturally cool down.A mathematical model of the heating and natural cooling process of the metal sheet was established,and the structure and material of the metal sheet were determined;the infrared interference device with a simple structure and a good sealing environment was designed.The test results indicate that the nickel sheets is the best material.The heating time is 50 ms(500-1 000 ℃),and the natural cooling time is 75 ms(1 000-500 ℃),which meet the frame rate requirement(10 Hz).And the regular periodic change of temperature is realized.The analysis and test results confirm that the device can simulate the rapid changes of infrared radiation characteristics,and could provide a new idea for interference in the terminal guidance phase.
作者
李延伟
高清京
魏浩东
李江涛
Li Yanwei;Gao Qingjing;Wei Haodong;Li Jiangtao(Harbin New Optoelectronics Technology CO.LTD.,Harbin 150028,China)
出处
《红外与激光工程》
EI
CSCD
北大核心
2021年第11期77-84,共8页
Infrared and Laser Engineering
基金
国防预研项目(315095404)。
关键词
红外干扰
辐射特性
传热学
infrared interference
radiation characteristics
heat transfer
