基于FPGA的脉冲压缩雷达目标模拟器设计

摘要

目标模拟器在雷达的研制生产过程中具有重要的意义，不仅能加快项目开发进度，还能降低研制和实验费用。介绍的模拟器主要是针对脉冲压缩雷达而设计，该模拟器通过对雷达回波中频信号模拟，利用FPGA技术实现，具有设计简单、使用方便、成本低等特点。首先根据系统要求建立了二相码脉冲压缩雷达目标回波信号的数学模型，利用辛克函数模拟雷达天线扫描状态；然后给出了基于FPGA的设计解决方案以及主要模块的实现方法；最后给出了设计可行的结论，同时指出了今后将改进的地方。%A target simulator has great significance in development and production process of radar,for it can not only speed up the progress of the project development,but also reduce the cost of research and experiment . The simulator descriked in this paper is mainly designed for pulse-compress radars . Through radar echo IF signal simu-lation,the simulator is achieved by FPGA technology,which is featured by simple design,conveniency,low cost, etc . In this paper,firstly,according to system requirements,a mathematical model of the two-phase code PC radar target echo signal is established,and radar antenna scan-status is simulated by using SINC function;then,the de-sign solution based on FPGA and the implementation method of the main module are given;finally,the conclusion that the design is feasible is given,at the same time,the improvements in the future are pointed out .