为有效应对红外成像制导**, 激光定向干扰技术在近年得到重点发展, 并有望成为未来红外对抗的主要方式。着眼于对激光干扰条件下红外系统成像特性的研究需求, 对机载激光定向干扰从发射、大气传输、光学系统传输以及探测器响应的全链路过程进行了分析建模, 构建了激光干扰条件下红外系统成像特性的仿真模型, 最后通过试验验证了文中方法和模型在对激光的红外成像灰度等级、成像光斑及灰度分布特性、成像饱和与致盲毁伤效果方面能够有效反映红外成像系统对激光的实际响应特性, 并取得与实测试验相近的仿真结果, 从而为后续深入研究激光定向干扰效能奠定基础。

For the purpose of effectively coping with the danger from infrared imaging guided weapons, Directional Infrared Countermeasure(DIRCM) technology is greatly developed in recent years, which has got promising to be the main trend of future Infrared Countermeasure(IRCM) technology. Focused on the research requirement for infrared image-forming system′s performance on the conditon of DIRCM laser′s irradiation, the whole process of DIRCM laser′s interaction with atmospheric environment and infrared image-forming system, including laser′s emitting, lasing atomspheric transmission, optic transmission and detector′s response of the input laser into infrared image-forming system, was well investigated and modeled, upon which the simulation model of infrared image-forming system′s performance under DIRCM laser′s irradiation was built. Finally, the proposed calculation method and simulation model in this paper were demonstrated valid for simulating infrared image-forming system′s real reaction performance to DIRCM laser′s irradiation, which are able to obtain efficient simulation results not only on the DIRCM laser′s infrared imaging grey level, facula appearance and grey texture, but also on the infrared image-forming system′s saturation and damage effects caused by the DIRCM laser′s irradiation at different situations, such as different distances, illuminations, etc. Meanwhile, above results were verified by real experiment which employed laser to irradiate real infrared thermal imaging system, the simulation data were testified close to real experiment datas, the validation of proposed method and model also gets proved. The proposed work provides foundation for further research into DIRCM′s jamming performance against infrared imaging guided weapons.