舰船水雾红外消光的性能优化

发布时间：2018-05-24 17:45

本文选题：光谱消光性能 + 红外辐射衰减　；参考：《红外技术》2017年06期

【摘要】：利用细水雾的红外消光作用,将舰船目标笼罩在一层水雾之中,能够有效减弱目标与背景的辐射能量差异,降低红外探测设备对目标的发现或识别概率。首先,从辐射传递方程出发,对传递方程进行了一定的简化,得出比布格尔定律更为通用的辐射衰减公式。然后,将水雾粒子视为满足对数正态分布的稀疏粒子群,利用Mie氏理论对水雾层的散射系数、衰减系数、吸收系数进行了计算,并分析了水雾参数(浓度、平均粒子半径以及对数粒子半径偏差)对光谱消光性能的影响。最后,经过合理的优化,得出具有最佳光谱消光性能的水雾参数。计算结果表明:当水雾浓度为7g/m~3,平均粒径为4μm,对数粒径偏差为0.9时,水雾对舰船目标具有最佳的消光性能。
[Abstract]:Using the infrared extinction of water mist, the ship target is enveloped in a layer of water mist, which can effectively reduce the radiative energy difference between the target and the background, and reduce the detection or recognition probability of the target by infrared detection equipment. First, from the radiation transfer equation, the transfer equation is simplified to obtain a more general radiation attenuation formula than Burger's law. Then, the water mist particle is regarded as a sparse particle swarm satisfying the logarithmic normal distribution. The scattering coefficient, attenuation coefficient and absorption coefficient of the water mist layer are calculated by using Mie's theory, and the water mist parameters (concentration, attenuation coefficient and absorption coefficient) are analyzed. The influence of average particle radius and logarithmic particle radius deviation on spectral extinction performance. Finally, after reasonable optimization, the water mist parameters with optimal spectral extinction performance are obtained. The results show that when the concentration of water mist is 7 g / m ~ (3), the average particle size is 4 渭 m, and the logarithmic particle size deviation is 0.9, the water mist has the best extinction performance to the ship target.
【作者单位】：中国人民解放军91336部队;
【基金】：国防预研项目海军工程大学自然科学基金项目(HGDJJ05009)
【分类号】：O434.3

【参考文献】