一种时间交织高速数据采集系统的设计和实现  

Design and implementation of a time-interleaved high-speed data acquisition system

作　　者：吴世华[1] 单涛[1] 马永锋[1] 

机构地区：[1]北京理工大学电子工程系,北京100081

出　　处：《电子测量技术》2008年第4期123-126,共4页Electronic Measurement Technology

基　　金：北京理工大学优秀青年教师资助计划(000Y01-5);武器装备预研基金(51417090305BQ0180)

摘　　要：随着现代雷达通信技术的发展,对数据采集系统的速度和精度提出了更高的要求,但是发达国家限制高性能AD的出口,这无疑制约了我国军事、民用通信的发展,研究高速AD的设计,势必对打破西方对我国的技术封锁产生深远的影响。本文设计了采用2路MAXIM公司的MAX104时间交织成的采样速率为2GHz的高速数据采集系统,后端采用XILINX的FPGA芯片利用通道适配误差校正算法完成数据校正工作,通过对时间误差、增益误差、偏置误差的测量和校正,实现了高速率的采样,信噪比和有效位数得到显著提高。With the development of modern radar and communication systems,the data acquisition systems ask for higher sampling rate and precision. However,the developed countries restrict the export of high-performance A/D conversion,which undoubtedly hinders the development of our military and civilian communications. To research and design high-speed A/D conversion is bound to have far-reaching implications to break the blockade. This paper designs a high-speed data acquisition system based on two MAX104,whose sampling rate is 2 GHz. In the back-end data processing modules,the correction algorithm of the Channel Adapter error is utilized to calibrate data through the XILINX FPGA chip. The high-speed acquisition system can achieve higher sampling rate by correcting the time errors, gain errors, and offset errors. Also, SNR and ENOB have been improved significantly.

关 键 词：时间交织 高速数据采集 MAX104 FARROW结构 数据实时校正 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置]