CAJ | 학술논문

多普勒天气雷达需要一个高速数据采集系统,以实现大量的基数据到微机中的实时传输,同时将控制命令传送到雷达处理器中.利用FPGA器件zynq-7000具有片上系统(SOC)的结构特点,构建一个具有高速传输功能的典型信号处理系统.采用千兆以太网芯片88E1518作为数据传输接口,以内嵌的Cortex-A9处理器作为接口的配置和控制部件,通过裁剪和重构Linux操作系统运行由C语言开发的软件应用系统程序代码,实现千兆以太网接口以及数据传输与命令交互功能.有限次实验和测试结果表明,采集系统容易达到640Mbps的数据传输速率,满足雷达数据采集的需求,未出现性能不稳定现象.
다보륵천기뢰체수요일개고속수거채집계통,이실현대량적기수거도미궤중적실시전수,동시장공제명령전송도뢰체처리기중.이용FPGA기건zynq-7000구유편상계통(SOC)적결구특점,구건일개구유고속전수공능적전형신호처리계통.채용천조이태망심편88E1518작위수거전수접구,이내감적Cortex-A9처리기작위접구적배치화공제부건,통과재전화중구Linux조작계통운행유C어언개발적연건응용계통정서대마,실현천조이태망접구이급수거전수여명령교호공능.유한차실험화측시결과표명,채집계통용역체도640Mbps적수거전수속솔,만족뢰체수거채집적수구,미출현성능불은정현상.
In order to transmit large amount of base data to a computer in real time and transmit control commands from the computer to a radar processor,a high speed data acquisition system is required in a Doppler weather radar.In this paper,a field programmable gate array (FPGA) device zyn-7000 with a structure characteristic of system on chip (SOC) is used to construct a typical signal processing system which has a high speed transmission function.In this system,a Gigabit Ethernet (GbE) chip 88E1518 is used as a data transmission interface,and an embedded Cortx-A9 processor is used as an interface configuration and control unit.A software application system is developed by running program code developede with C language through cutting and reconstructing the Linux operating system,and data transmission and command interaction between the computer and the acquisition system are realized via a GbE interface.Experiments and test results show that the data transmission rate of the acquisition system can reach to 640Mbps,so the radar data acquisition requirement can be met,and instability phenomena have not appeared.