毫米波/红外复合制导半实物仿真关键技术研究

对毫米波/红外复合制导的半实物仿真进行了研究,给出了仿真系统的总体方案,引入毫米波/红外双波束合成器以实现真正意义的复合制导仿真.对毫米波目标的模拟仿真、红外目标的模拟仿真以及双波束合成器等系统关键技术进行了重点分析和阐述,提出了利用分形频率选择表面实现双波束合成器的方法,给出了具体设计实例,仿真和实测结果表明该波束合成器对毫米波信号的透射性能稳定,对长波红外信号的反射率平均保持在85%,并对8mm和3mm毫米波/红外复合制导体制均适用.

Key Technology of Hardware-in-the-loop Simulation for MMW/IR Compound Guidance System

Hardware-in-the-loop simulation for MMW/IR compound guidance system is researched. A principle scheme of the simulation system is presented and a dichroic beam combiner is introduced. The key technology of the designing and producing of MMW target simulation, IR target simulation and dichroic beam combiner is expatiated and analyzed. A fractal frequency selective surface is designed to use as dichroic beam combiner. Both simulated and experiment results show that the beam combiner has high performance of stable transmission for MMW incident signal, and the average reflectivity for far IR signal reaches 85%.Furthermore, the beam combiner can be used in both 8mm and 3mm MMW/IR compound guidance system.