全闭环条件下机载主被动雷达数字化仿真技术研究

随着计算机仿真技术的发展，可以结合实际雷达工作流程和处理算法来实现装备的数字孪生，从而脱离传统射频设备或半实物硬件平台。本文介绍了主动雷达搜索、跟踪及SAR成像的信号级仿真，被动雷达搜索、跟踪的功能级仿真流程和相关实现算法，并通过主被动雷达仿真基础运行软件进行算法集成，在闭环仿真验证平台下与控制、散射源和辐射源分系统进行交互，根据其输入的控制指令与回波数据实现各模式下的雷达处理，最后反馈给控制分系统，实现了闭环工作模拟。试验结果验证了该仿真技术的工作流程与信号处理算法的正确性，所给出的部分干扰过程分析进一步说明该技术在机载主被动雷达设备的预研和复盘中具有广泛的应用前景。

Research on digital simulation technology of airborne active and passive radar in full closed loop

With the development of computer simulation technology, the digital twin of equipment can be realized by combining the actual radar workflow and processing algorithm, so it can be separated from the traditional RF equipment or semi-physical hardware platform. This paper introduces the signal-level simulation of active radar search, tracking and SAR imaging, the functional-level simulation process and related implementation algorithms of passive radar search and tracking, and integrates the algorithms through the active and passive radar simulation basic operation software. Under the closed-loop simulation verification platform, it interacts with the control, scattering source and radiation source subsystems, realizes radar processing in each mode according to the control instructions and echo data input, and finally feeds back to the control subsystem to realize the closed-loop simulation. The experimental results verify the correctness of the workflow of the simulation technology and the correctness of the signal processing algorithm. The analysis of some interference processes further shows that the technology has a wide range of application prospect in the pre-research and review of airborne active and passive radar equipment.