海面反射特性研究

The Study of the Reflection Feature of the Sea

建立目标的红外热成像理论模型是国内外有关研究机构的热点之一。在军事目标红外理论建模研究红外热像的成像过程中 ,海天背景与舰船的红外辐射场的相互作用尤为重要。其中需解决的关键问题和技术难点便是在成像过程中舰船辐射场在海面上的反射成分的计算。作者较为详细地讨论了海面的反射特性 ,计算了平静海面和Cox -Munk海面对特定红外波段 (3- 5um )入射光的反射 ,并对两种模型进行了比较 ,分析了Cox -Munk海面模型下反射率分布及其随风速、入射方向的变化情况。

It's one of the most fascinating problems for the research institutes to make a theoretical model for infrared thermal image. The interaction between the backgrounds of sea and sky and the ship infrared radiation fields is especially important in the process of getting the infrared thermal image of the target in the military. The calculation of the reflection of the sea is the key point in our study and the reflection feature of the sea is discussed in detail. Also the paper systematically calculates and analyzes the reflection featres of smooth sea surface and Cox-Munk sea surface in certain wave bands, especially from-3-5um and 8-12um. It analyzes how the reflection distribution of the Cox-Munk Sea surface changes with the speed of wind and the incidence direction as well.