数字微镜阵列红外动态景象模拟器的研制

Dynamic IR scene projector using a digital micro-mirror device

红外动态景象模拟器为红外半实物仿真系统提供动态目标和背景,是半实物仿真系统的核心技术之一。介绍了基于数字微镜阵列研制的红外动态景象模拟器的组成、工作原理和技术指标。描述了数字微镜阵列红外动态景象模拟器的4大关键技术,即红外图像转换技术,红外图像转换器的同步调制驱动技术,红外光学耦合技术和红外热像逼真度修正技术。分析了红外图像转换器同步与不同步驱动对图像采集的影响。给出了经研制的数字微镜阵列景象模拟器产生、红外热像仪获取的红外图像。实验结果表明:该模拟可广泛应用于红外成像探测系统的仿真、测试和标定。

Dynamic infrared scene projector is a kernel technology for the hardware-in-the-loop （HWIL） simulation system, since it provides dynamic representative backgrounds and targets for the HWIL. The element, principle and qualification were given for the dynamic IR scene projector based on a digital micro-mirror device （DMD）. The key technologies of the dynamic infrared scene projector were analyzed, including the IR image converter, the synchronous modulation driving for the IR image converter, and the optically coupled technology of IR and enhancement fidelity of the IR image. The impact of image capture on the synchronous and asynchronous driving were analyzed as well. Sample images generated with the dynamic infrared scene projector and captured by an FPA sensor were presented.The experimental results show that the the dynamic IR scene projector can be widely used in simulation,measurement and calibration in IR imaging system.