集成电路与嵌入式系统2025，Vol.25Issue(4)：66-71,6.DOI:10.20193/j.ices2097-4191.2025.0002
宽带内多目标信号原始数据分离技术实现
Realization of raw data separation of multiple target signals within broadband
摘要
Abstract
Under complex electromagnetic environment conditions,multiple target signals appear simultaneously.The comprehensive testing system needs to have independent real-time analysis capabilities for simultaneously arriving signals.Due to the huge amount of broadband data,existing systems cannot seamlessly extract and process multiple target signals in real time.To meet the extraction re-quirements of high-density target signal raw IQ data within broadband,this paper uses FPGA high-speed digital signal processing tech-nology to achieve multi-channel down conversion at any frequency point within the analysis bandwidth and variable analysis bandwidth extraction filtering.Combined with framing and time-sharing scheduling read control,it can simultaneously separate up to 32 channels of target signal raw IQ data with a maximum analysis bandwidth of 300 kHz within an 80 MHz intermediate frequency bandwidth using DDR4 buffering and PCIe 3.0×8 bus transmission.The system adapts dynamically to transmit multi-channel IQ data at different rates while displaying the broadband signal spectrum,achieving seamless transmission of multi-channel IQ data.During the measurement process,it supports the real-time modification of the number,frequency,and bandwidth parameters of the target signal.This technology lays the foundation for real-time analysis of multi-target signal parameters within broadband,and improves the real-time analysis and processing capabilities of high-density signals in comprehensive testing systems.关键词
数字下变频/DDC/PCIe/IQ数据/FPGAKey words
digital down conversion/DDC/PCIe/IQ data/FPGA分类
电子信息工程引用本文复制引用
郭静,黄朋,隋晓波..宽带内多目标信号原始数据分离技术实现[J].集成电路与嵌入式系统,2025,25(4):66-71,6.基金项目
国家重点研发计划资助(2023YFF0717400) （2023YFF0717400）
国防基础科研计划资助(JCKY2022210B006). （JCKY2022210B006）
