针对高速机载雷达数据传输的实际需求,设计了一种基于千兆以太网的高速机载雷达数据采集系统。系统以现场可编程门阵列(FPGA)为控制中心,采用FPGA 内部的两片高速FIFO 实现对高速雷达数据无缝缓存与传输。同时,采用FPGA 内部的千兆以太网MAC 控制器将FIFO 中的数据读取及处理,最终,通过RJ-45 接口将数据上传到上位机。地面测试结果表明:系统能够对传输速率为360 Mb/ s 高速串行雷达数据进行采集,并上传到上位机,验证了基于千兆以太网的高速机载雷达数据采集系统设计的可靠性与稳定性。

Aiming at the actual demand of high-speed airborne radar data transmission, the high-speed airborne radar data acquisition system based on Gigabit Ethernet was designed. The core of the system was field programmable gate array(FPGA), using two pieces of FPGA internal high-speed FIFO buffer ping-pong for high-speed radar data seamless caching and transmission, and using FPGA internal Gigabit Ethernet MAC controller to read and handle data in the FIFO. Finally, the data is uploaded to the host computer by the interfaces of RJ-45. Ground testing results show that the system realizes high-speed serial transmission rate of 360 Mb/ s radar data collection, and uploads the data to the host computer, which verifies the reliability and stability of the high-speed airborne radar data acquisition system based on Gigabit Ethernet.

TN952