基于DSP的雷达中频信号模拟器设计

在作战系统、武器系统联调试验中需要雷达中频信号模拟器根据不同类型的雷达逼真地模拟包含雷达目标信息和环境信息的中频回波信号.根据工程需求分析了雷达中频信号模拟器的机理,以高性能DSP数字信号处理模块为核心介绍了通用型雷达中频信号模拟器的组成结构及性能指标,对主要的DSP模块任务分配及工作流程进行了介绍,对DSP模块中的天线方向图、多普勒频率、目标截面积起伏、大气衰减等主要模型作了详细阐述.雷达中频信号模拟器具有较好的设备通用性和逼真度,在某作战系统的联调试验中得到应用,达到预期的试验效果,并在训练装备研制中有较好的应用前景.

Development of Radar IF Simulator Based on DSP

In a test of weapon system or combat system, Radar IF signal simulator must produce realistic radar echo - wave signal, which contains information of targets and environment. This paper analyzes the principle of the radar IF simulator, introduces the functions, architecture and performance, provides working flow of DSP system, then a method for simulation models, such as radar equation, antenna pattern, Doppler frequency, radar cross section, atmospheric attenuation is given. Radar IF signal simulator has good fidelity and practicability, and it is successfully applied in a test of certain combat system,and will be applied in training system.