摘要
根据数值传热学的方法模拟了目标表面温度分布,分析了隐身涂料的性能参数(短波吸收率αs、长波吸收率lα与表面发射率tε)对目标表面温度的影响;模拟了这些性能参数对红外探测系统作用距离的影响。分析结果表明:上述3种性能参数均会对目标表面温度产生影响。sα、lα与表面温度成正比,tε与表面温度成反比,影响幅度可达10℃左右;探测系统作用距离与背景温度、气象条件、探测器性能等多种因素相关,根据实际情况调整涂料性能参数可使作用距离最小。这些结果基本满足红外隐身涂料设计、选型与使用方面的实际需求。
On the basis of the method of numerical heat transfer,the surface temperature of target was simulated. Then, the influence of the performance parameters of camouflage coating（shortwave absorptivity αs, longwave absorptivity α1, emissivity εt） on the surface temperature of target was analyzed. Finally, the influence of these performance parameters on the lock-on range of infrared detection system was also analyzed. The analytical results show that all of performance parameters would affect the temperature of target. αs and a1 are in direct proportion to the temperature of target, and εt is in inverse proportion to that, the influencing range could reach to 10 ℃. Moreover, the lock-on range of detection system correlates to background temperature, weather condition, capability of detector and so on, and adjusting the performance parameters to the practical condition can shorten the lock-on range to least. These results can satisfy the practical requirements of design, selection and application of infrared camouflage coating.
出处
《光学精密工程》
EI
CAS
CSCD
北大核心
2009年第2期280-285,共6页
Optics and Precision Engineering
基金
海军工程大学自然科学基金资助项目(No.HGDJJ05009)
关键词
红外隐身技术
隐身涂料
性能参数
作用距离
infrared stealth technology
camouflage coating
performance parameter
lock-on range
