舰船红外成像模拟

研究并建立了海面舰船的红外理论模型，较为完善地考虑了周围环境对物体及物体各部分之间的相互作用，包括太阳辐射，海／天背景辐射，海／空气的对流，以及船体各部分的传导和相互辐射；同时考虑了舰船内舱对船壁的辐射和对流作用，采用蒙特卡 方法，引入准随机数解决了复杂几何结构表面非漫反射灰体的辐射计算。

THE SIMULATION OF INFRARED IMAGING OF THE SHIP

An IR theoretical model of the ship was presented. The effect of the environment on the object, and the interaction between different parts of the object were investigated. The thermal model includes solar heating, sea/sky radiation, sea/air convection, the conduction between different parts of the ship and the surface radiation (which accounts for multiple diffuse reflections); the radiation and convection of the hold were also included. Based on the Monte Carlo method, the quasi random number was introduced to the calculation of radiant heat exchange between non diffuse gray surface of complex geometrical structure. The fluid, temperature field and IR emission of hot gas in the funnel were investigated and calculated. For a ship, the 3D surface geometry a target was defined, the temperature and IR emission field were calculated, and the simulated IR thermal image was presented.