摘要
目前,线性调频连续波(LFMCW)雷达射频前端和数据采集板大都来自美国德州仪器(TI),对该系统的二次开发较为困难、成本昂贵,且该仪器对雷达采集数据不能进行实时显示,不利于数据的分析。针对上述问题,文中提出一种基于ZYNQ平台并采用AD9228作为模数转换器件的八通道数据采集系统。该系统通过上位机配置雷达参数,并将射频前端采集到的数据通过千兆以太网传输。为了减少传输数据之间的冗余,在采集系统中构造一种高效的传输数据结构,以有效提高传输速率。由于雷达数据量过大,上位机采用多进程对数据进行接收处理,并将雷达数据时域、频域及距离-多普勒信息实时显示。实验结果表明:文中系统在长时间工作下运行稳定,千兆网传输速度可达到150 Mb/s以上,不存在丢帧的情况;相比于TI的雷达采集系统,该系统具有结构简单、成本低廉、操作方便的优点。
At present,the RF(radio frequency) front end and data acquisition board of LFMCW(linear frequency modulated continuous wave) radar are mostly from TI(texas instruments),but the secondary development of its system is difficult and expensive,and the instrument cannot display the data acquired by radar in real time,which is not conducive to data analysis. In view of the above-mentioned problems,an eight-channel data acquisition system based on ZYNQ platform and AD9228 taken as analog-digital converter is proposed. In the system,the radar parameters are configured by means of the upper computer,and the data collected from the RF front end is transmitted with gigabit Ethernet. In order to reduce the redundancy between transmission data,an efficient transmission data structure is constructed in the acquisition system to improve the transmission rate effectively. Due to the large amount of radar data,the host computer receives and processes the data by means of multiprocess,and the time domain,frequency domain and range-Doppler information in the radar data are displayed in real time. The experimental results show that the system can run stably in long-time operation,the transmission speed of gigabit network can reach more than 150 Mb/s,and there is no frame loss. In comparison with radar acquisition system made by TI,this system has advantages of simple structure,low cost and easy operation.
作者
麦超云
刘子明
黄传好
MAI Chaoyun;LIU Ziming;HUANG Chuanhao(Department of Intelligent Manufacturing,Wuyi University,Jiangmen 529020,China)
出处
《现代电子技术》
2022年第10期36-39,共4页
Modern Electronics Technique
基金
国家自然科学基金项目(61771347)
广东普通高校人工智能重点领域专项(2019KZDZX1017)
广东省基础与应用基础研究基金项目(2019A1515010716)
广东省普通高校基础研究与应用基础研究重点项目(2018KZDXM073)
广东省数字信号与图像处理技术重点实验室开放基金(2019GDDSIPL-03)。
关键词
八通道数据采集
系统设计
数据传输
雷达参数配置
数据接收
实时显示
eight-channel data acquisition
system design
data transmission
radar parameter configuration
data receiving
real-time display
