中频宽带信号采集存储回放系统设计  

Design of Intermediate Frequency(IF)Broadband Signal Acquisition,Storage and Playback System

作　　者：罗义军[1] 覃语豪 LUO Yi-jun;QIN Yu-hao(School of Electronic Information, Wuhan University, Wuhan 430072, China)

机构地区：[1]武汉大学电子信息学院,武汉430072

出　　处：《科学技术与工程》2022年第10期3998-4004,共7页Science Technology and Engineering

摘　　要：目前中频宽带信号在通讯及雷达领域中的应用十分广泛,为了将无法实时处理的信号后续再处理以及将采集到的信号在其他地点重现,设计了一种中频宽带信号采集存储回放系统。基于FPGA(field-programmable gate array)+ADC(analog-to-digital converter)/DAC(digital-to-analog converter)的系统结构,将中频宽带信号采集后通过PCIE(peripheral component interconnect express)传输到上位机进行存储,再通过PCIE下发到DAC进行回放,从而完成信号的采集存储回放,具有很高的普适性与便携性。实现了在1 G采样率下,对400 M带宽的中频信号进行采集存储回放,充分满足了高速宽带信号采集设备中采集存储回放系统的要求。At present,Intermediate frequency(IF)broadband signals are widely used in the fields of communication and radar.In order to reprocess the signals that cannot be processed in real time and reproduce the collected signals in other locations,an IF broadband signal acquisition,storage and playback system was designed.Based on the system structure of FPGA(field-programmable gate array)+ADC(analog-to-digital converter)/DAC(digital-to-analog converter),the intermediate frequency wideband signal was collected and transmitted to the host computer through PCIE for storage,and then sent to DACfor playback through PCIE(peripheral component interconnect express),thus completing the collection,storage and playback of the signal,which had high universality and portability.The intermediate frequency signals could be acquired,stored and played back with a bandwidth of 400 M at a sampling rate of 1 G,by which the requirements of the acquisition,training and storage and playback system could be fully met in high-speed broadband signal acquisition equipment.

关 键 词：信号采集存储回放 FPGA JESD204B AD9680 AD9152 

分 类 号：TN919.5[电子电信—通信与信息系统]