基于FPGA的软件无线电宽带多通道数字接收技术  

Study of Wideband Digital Receiver with Multi-channel Technology Based on FPGA

作　　者：黄欣[1] 张平[1] 童智勇[1] 黄杰文[1] 朱磊[2] 

机构地区：[1]中国科学院电子学研究所,100190 [2]中国人民解放军总参谋部陆航部,北京100012

出　　处：《科学技术与工程》2009年第12期3292-3296,共5页Science Technology and Engineering

摘　　要：针对宽带信号数字接收要求采样速度快、消耗资源多、难以实时处理的问题,利用频域多通道接收、中频数字化采样技术,论证了可应用于太阳射电日像仪的接收系统实现方案。引入一种高效的多相抽取滤波数字下变频方法,给出了基于FPGA的并行多路信号接收处理实现方案,仿真实验表明该中频数字接收模块设计方案具有好的可实现性。In the application of wideband digital receiver for CSRH （Chinese Solar Radioheliograph project） system, the demand of high speed sampling and huge consuming resource is the bottleneck. According to the research on the principle of multi-channel receiver and the signal sampling in intermediate frequency, the demodulation method is introduced with polyphase filter, analyzed and improves the design of receiver system for CSRH and presents an effective structure of multi-channel digital receiver based on FPGA. Simulation results verify the validity of this digital receiver design.

关 键 词：太阳射电日像仪 高效数字下变频 正交解调 频域多通道 FPGA 

分 类 号：TN959.31[电子电信—信号与信息处理]