烟幕具有对红外波段的吸收、反射和散射等特性,可以导致红外成像系统接收到的能量大大衰减,降低其探测能力。烟幕的运动特性、形态特性和透过率分布等对红外成像系统干扰效果均有影响。在分析红外探测系统响应和烟幕透过率特性的基础上,基于实测烟幕数据仿真了单发烟幕的辐射特性、运动特性、形态特性和透过率分布。结果表明基于实测烟幕数据的烟幕仿真较好地体现了烟幕形态特性和运动特性等对红外探测系统跟踪性能的影响,为红外烟幕的仿真提供了一种有效的方法。

The smoke screen that may absorb and scatter infrared, heavily attenuates energy of optics system, and then will reduce the detection probability of infrared detecting system. The jamming effects of infrared detecting system are impacted by the motion characteristic, morphological characteristic and transmittance distribution. The response characteristics of infrared detecting system and transmittance distribution of smoke screen are analyzed, and then the radiation characteristic, motion characteristic, morphological characteristic and transmittance distribution are simulated. The experiment results show that IR smoke simulation based on field testing image data can reflect the interfere effects of the motion characteristic, morphological characteristic and transmittance distribution. It can meet the need of infrared image simulation.