人造水雾对红外辐射衰减的建模与仿真研究

在建立水雾红外衰减模型时,通常把水雾空间看作单一均匀整体进行处理,然而雾滴的扩散现象会使水雾的雾滴密度无法做到处处相等,所以仿真结果与实际情况之间普遍存在较大偏差。针对这一问题,基于高斯扩散理论与Mie散射理论,提出了一种新的建模方案。通过将水雾空间划分为多个子空间,并计算每个子空间内水雾的消光性能,提高了建模的准确性;同时根据仿真结果,分析了水雾在不同方向上的红外辐射衰减能力。该研究对于制定有效的红外对抗策略具有一定的参考价值。

Modeling and Simulation of Infrared Radiation Attenuation of Artificial Water Mist

When the model of infrared attenuation of water mist is established, the space of water mist is usually treated as a homogeneous whole. However, because of diffusion, the droplet density of water mist can not be kept consistent everywhere. So there is commonly a great deviation between the simulation result and the actual situation. To solve this problem, a new modeling method based on Gaussian diffusion theory and Mie scattering theory is proposed. By dividing the space of water mist into several subspaces and calculating the extinction performance of the water mist in each subspace, the modeling accuracy is improved. At the same time, the infrared radiation attenuation of the water mist in different directions is analyzed according to the simulation result. This research work is of a certain reference value to the making of an effective infrared countermeasure strategy.