摘要
为同时完成4个Stokes矢量参数的相关测量,反演海面风场,提出了新型数字相关器的设计方法。结合高速数字相关器在数字极化辐射计中的应用,介绍了高速数据采样和相关处理系统。通过两片高速A/D转换器(ADC08D1500)同步采样四路信号,采样结果通过Xilinx公司新一代现场可编程门阵列(FPGA)-Virtex5芯片作相关运算,相关结果通过串口上传到计算机,详细介绍了系统各个部分的接口电路和时序控制的设计。系统可以实现四路信号最高1.5GHz采样率的相关计算。
To get all the four Stokes parameters and ocean surface field,a novel digital correlator used in polarization radiometer is in-troduced.Two high-speed A / D converter（ADC08D1500） are used to sample four signal channels at the same time.The sampling results are operated in the newest field-programmable gate array（FPGA）-Virtex5 made by Xilinx to make correlation calculation with correlation results translated to computer by serial port.The design of interfacing circuit and control system of the main modules are pre-sented in detail.The system max sampling rate is 1.5 GHz.
出处
《计算机工程与设计》
CSCD
北大核心
2011年第3期867-869,891,共4页
Computer Engineering and Design
