红外成像导引头闭环注入式仿真试验系统设计及一致性分析

Design and consistency analysis of IR imaging seeker closed-loop injection simulation experiment system

闭环注入式仿真是开展红外成像制导武器对抗及其复杂环境适应性试验的一种有效手段,它在传感器被图像仿真计算机和图像注入接口设备取代的情况下,采集导引头的框架角数据,实时仿真生成红外数字图像,并通过注入接口设备直接注入到导引头信息处理电路中进行试验。分析了闭环注入式仿真试验的工作原理,设计了仿真试验系统的软硬件平台、工作时序,理论计算了仿真试验系统产生的失调角延时和失调角误差,并利用搭建的仿真试验与导引头实际工作一致性分析平台,分析了因失调角延时和失调角误差导致导引头输出的偏航、俯仰角速度误差和制导精度误差。仿真结果表明:仿真试验与导引头实际工作条件是一致性的,设计的仿真试验系统较为科学合理,该结论可为开展红外成像导引头闭环注入式仿真试验提供理论支撑。

Closed-loop simulation based on digital image injection is an effective testing means of IR imaging guidance weapon countermeasure and complicated environment adaptability, it collects frame angle of seeker and real-time simulates to generate IR image when the detector of IR seeker is replaced by image simulation computer and injection device, the image is injected by injection device. The principle of closed-loop simulation test were analyzed, software, hardware platform and work scheduling of simulation test system were designed, miss distance time delay and miss distance error were calculated, consistency analysis platform of simulation test and actual work was built, yaw and pitching angle velocity error and homing precision were analyzed by miss distance time delay and miss distance error. The result shows that the condition of simulation test and actual work of seeker was consistent, simulation test system was scientific. The research results provide theoretical support for developing closed-loop injection simulation test.