摘要
为满足某星载SAR雷达关键性技术验证的需求,设计并实现了一种大带宽、多通道、多模式的高速数据采集系统。系统由采集单机和记录仪两部分组成,采集单机采用通用灵活的FMC子母板架构,母板为接口丰富的通用信号处理板,子板为可灵活更换的信号采集卡。采集单机通过高速光纤传输数据至记录仪,记录仪配有大容量DDR3进行高速数据缓存,由PCI-E总线将数据存储至计算机。采集系统成功完成某星载SAR雷达进行的机载飞行试验数据的采集,试验结果验证了设计方案的正确性和可行性。
In order to meet the requirements of the verification of the key technologies of a spaeeborne SAR radar, a high speed data acquisition system is designed and implemented. The system is composed of da- ta acquisition extension and grapher. Data acquisition extension adopts the COTS（commercial-off-the-shelf） devices and standard FMC（FPGA mezzanine card） architecture. The mother card is a general signal process- ing board with rich interfaces. The daughter card is a signal acquisition card which can be changed flexibly. The grapher uses the optical fiber communicating with the data acquisition extension. It owns a high-capacity DDR3 for high-speed data caching, and transfers data to computer with PCI-E bus. The system completed data acquisition in the flight test and the results verified the correctness and feasibility of the design scheme.
出处
《雷达科学与技术》
北大核心
2016年第5期526-530,共5页
Radar Science and Technology
关键词
可编程门阵列
高速数据采集
宽带
多通道
field programmable gate array（FPGA）
high speed data acquisition
wideband
multi-channel
