宽带信号采集回放和识别系统设计  

Design of Broadband Signal Acquisition and Playback andRecognition System

作　　者：罗义军[1] 罗海宁 LUO Yi-jun;LUO Hai-ning(School of Electronic Information,Wuhan University,Wuhan 430072,China)

机构地区：[1]武汉大学电子信息学院,湖北武汉430072

出　　处：《仪表技术与传感器》2023年第4期42-46,52,共6页Instrument Technique and Sensor

摘　　要：射频信号在雷达、通信、电子对抗、复杂系统测试等领域中有着广泛的应用。对射频信号进行采集,可获取信号的参数特征,而存储回放又可以模拟复杂电磁环境,完成后续的通信算法研究。为了满足各种应用需求,设计了一种通用化的宽带信号采集回放和识别系统。采用3U PXIe机箱搭载FPGA+ADC/DAC、存储控制板等板卡的系统结构,实现了对频率1 MHz~18 GHz,最大带宽400 MHz射频信号的采集存储回放。最后,对系统进行了整体功能性测试,并对数据的采集回放误差精度进行了分析,验证了系统的稳定性和功能的正确性。RF signals are widely used in the fields such as radar,communications,electronic countermeasures,and complex system testing.Collecting RF signals can obtain the parameter characteristics of the signals.Playback of RF signals can simulate complex electromagnetic environments for further research on communication algorithms.In order to meet various application requirements,a generalized broadband signal acquisition,playback and recognition system was designed.System structure used 3U PXIe chassis equipped with FPGA+ADC/DAC,storage control board and other boards.It achieved the collection,storage and playback of RF signals with frequency of 1 MHz~18GHz and bandwidth of 400 MHz.Finally,the overall functional test of the system was carried out,the error accuracy of the data acquisition and playback was analyzed,which verifies the stability of the system and the correctness of the function.

关 键 词：采集识别 存储回放 3U PXIe机箱 FPGA 

分 类 号：TN919[电子电信—通信与信息系统]