Research And Design Of Dual-band Dynamic Infrared Scene Projecton System

Dynamic infrared scene simulation system is a kind of hardware-in-the-loopsimulation method。This method can simulate IR system’s real work environment in thelaboratory, so as to evaluate the performance of IR system. This evaluation methodcompared to the field experiment for IR system, can save money and shorten the missiledevelopment cycle. Therefore, further research the infrared simulation system is of greatsignificance to our country development the photoelectric guidance.Infrared simulation system’s key subsystems is infrared scene projection subsystem,the target and background’s infrared radiation could be simulated by the system, andtransmitted to the IR system’s enter pupil place. This paper designed a set of doubleband dynamic infrared scene simulation system based on the digital micro-mirror deviceand resistance array for the new generation of infrared simulation system. This sceneprojection system has a long enter pupil distance of6000mm, can provided MWIR andLWIR dynamic infrared scene for guided missile. The system adopt the scheme ofcompound the former no focal system and after assemble focus system, and thestructure used the refraction-reflection shape. This structure not only can narrow thesize of the optical component, but also coule meet the requirements of the resolution ofthe test system. The entire system’s longitudinal width also content the requirements.And the paper finish the tolerance anlysis of the system.According to the MWIR scene projector’s target simulator DMD employmentprinciple and selected the characteristics of DMD target simulator parameters, designeda set of illumination system can uniform illuminate the DMD. The illumination systemuse fly-eye-lens arrays and Kola illumination hang together’s format. The system cancohesion the projection system and can realize better uniform illumination.The paper in allusion to the scanning device of simulation system, using matrixanalysis and vector analysis methods analyse image rotation and lens alignment errors.