红外动态目标模拟器驱动及控制系统设计

Dynamic infrared target simulator driving and controlling system design

红外动态目标模拟器系统是红外制导武器半实物仿真系统中的关键设备。以某型空地导弹导引头半实物仿真系统为应用对象,以微反射镜阵列(DMD)为核心器件,针对DMD型红外目标模拟器的对比度、灰度等级和分辨率等关键技术指标,设计开发了基于DMD的动态红外目标模拟器系统。首先介绍了DMD芯片的工作原理和灰度成像原理,其次对同步驱动、数据加载和脉宽调制等关键电路进行详细设计,开发完成了DMD驱动及控制系统电路,设计完成了基于DMD的红外动外目标模拟系统。该模拟器目前已经成功应用于某型红外成像导引头半实物仿真测试系统中,逼真度和实时性高,涉及的关键指标得到了改进和提高。

Dynamic infrared target simulator is one of the crucial equipments for infrared guidance weapon′s hardware-in-the-loop simulation platform.With the Digital Micro-mirror Device（DMD） as the key component,a dynamic infrared target simulation system was developed which will be used as the hardware-in-loop simulation platform for a certain type of air-to-ground missile seeker.DMD fundamental operating principle and gray imaging theory are explained thoroughly.Various key DMD subsystems such as DMD operating core,synchronization driving,data loading and PWM are designed elaborately and a dynamic infrared target simulator based on DMD has been developed.The practical experiment results prove that the above simulation system can satisfy all the design specification requirements and ideal simulation effects were obtained.