基于FPGA的多信道全数字高频雷达接收机

All-digital high frequency radar receiver with multi-channels using FPGA

基于软件无线电的设计思路,提出了一种多信道全数字高频雷达接收机的设计方案.该方案采用USB2.0接口设计实现雷达系统控制和数据传输任务,并结合Altera公司的CycloneII系列现场可编程门阵列(FPGA)芯片,实现系统同步控制、数字正交解调以及数字下变频.与传统模拟接收机和中频接收机相比,该系统具有硬件结构简单、参数配置灵活方便等特点.系统闭环测试结果验证了方案的正确性及合理性,能够满足工程应用的需求.

On the concept of software radio, a design of multi-channel all-digital high frequency radar receiver was presented, which carried out the system controls and sample data transmission by the USB2.0 interface. Synchronization control, digital quadrature demodulation and digital down converter were implemented based on Altera CycloneII family field programmable gate array （FPGA）. Compared with the traditional analog receiver and intermediate frequency receiver, it has an easy hardware structure, convenient for parameter configuration. The system closed-loop test shows the correctness and rationality of the design, meeting the demand of engineering applications.