水雾的热红外伪装性能分析  

Analysis of Thermal IR Camouflage Performance of Water Fog

作　　者：卢辉[1] 王向伟[2] 吕绪良[1] 孟宪浩[1] 

机构地区：[1]解放军理工大学工程兵工程学院,江苏南京210007 [2]第二炮兵装备研究院,北京100085

出　　处：《红外技术》2009年第11期646-649,共4页Infrared Technology

摘　　要：利用Mie散射理论,在水的复折射指数随波长变化的情况下,通过雾滴消光效率因子和gamma尺寸谱分布计算了热红外波长范围内的消光系数,建立了热红外波段gamma尺寸谱分布雾的含水量与消光系数的关系,分析了含水量为0.1和0.5时的红外探测器探测距离随传输路径L之间的变化关系。结论表明,水复折射指数、雾滴尺寸谱分布对雾的热红外辐射传输衰减有着较大影响,水雾遮蔽伪装时需充分考虑。Under the ground that the refractive indices of water vary with wavelength, the water fog＇s extinction coefficient was calculated by Mie scattering theory on the basis of the extinction efficiency factor and the particle radius of standard gamma distribution. Then the model of extinction coefficient was set up with different water content in the thermal IR band. When the water content equals to 0.1 and 0.5, the relationships between the detecting distance of the IR detector and transferring distance was analyzed. The results showed that refractive indices and particle radius distribution of water fog had a great influence on the radiation transferring attenuation, so these two factors should be considered seriously when the water fog is used in defilading camouflage.

关 键 词：MIE散射 复折射指数 GAMMA分布 消光系数 探测距离 

分 类 号：TN216[电子电信—物理电子学]