电子战中的基带雷达信号源设计

The design of baseband radar signal source of electronic warfare

现代战争中部队信息化作战的能力已经成为战争成败的关键因素,构建高逼真度的基带雷达信号源对于电子战的指挥与训练具有重要意义。研究了一种基于FPGA基带雷达信号源的设计。首先在上位机开发应用程序,对FPGA进行参数配置,然后研究了DDS产生信号的原理,将关键的信号产生模块封装成AXI总线接口的IP核,增强了设计的灵活性和重用性,最后结合一片高速D/A芯片进行数模转换,完成了基带雷达信号源的设计。利用频谱仪测试了信号源的性能指标,实测表明整体设计符合电子战中对雷达系统的应用需求。

In the modern war, the ability of information warfare capability has become a key factor to win the war, to construct a high realistic radar signal source is of great significance for the command and training of electronic warfare. A method of baseband radar signal source based on FPGA is studied. In order to configure the parameters of FPGA, a software is developed on the host computer firstly, then the principle to generate signal by DDS is studied. Meanwhile the key signal generating module is encapsulated into the IP core of the AXI bus interface which will enhance the flexibility and reusability of the design. In the end, combined with a high-speed D/A chip to do digital to analog conversion, the design of baseband radar signal source is finished. With the spectrum analyzer, the performance of the signal source is tested, the result indicates that the design can meet the applications requirements of radar.