基于数字域信号合成的仿真系统架构研究  

Research on the architecture of simulation system based on digital signal synthesis

作　　者：赵宏宇 武忠国[1] 姚辉伟[1] 陈冬冬[1] 申绪涧[1] Zhao Hongyu;Wu Zhongguo;Yao Huiwei;Chen Dongdong;Shen Xujian(Unit 63892 of PLA,Luoyang 471003,Henan,China)

机构地区：[1]中国人民解放军63892部队,河南洛阳471003

出　　处：《航天电子对抗》2024年第3期11-15,共5页Aerospace Electronic Warfare

基　　金：电子信息系统复杂电磁环境效应(CEMEE)国家重点实验室项目(CEMEE2023Z0201)资助课题。

摘　　要：针对基于射频信号合成的注入式仿真系统架构复杂、硬件成本高、难以扩充和更改的技术难题,提出了基于数字域信号合成的注入式仿真系统架构,在降低系统射频链路复杂度的前提下,利用多通道数字信号合成模块(MCDSSM)替代了射频信号合成架构中的天线波束形成单元(ABFU),实现了架构简单、模拟雷达接收通道数量灵活可变、接入干扰设备可扩充的系统架构。进一步在数字域给出了基于三阶交调失真模型的雷达多通道回波信号处理流程。仿真试验验证了基于数字域信号合成的仿真系统架构的可行性。Aiming at the problems of complex architecture,high hardware cost,and difficulty to expand and change of the injection simulation system based on RF signal synthesis,an injection simulation system architec-ture based on digital signal synthesis(DSS)is proposed.On the premise of reducing the complexity of the RF channel,the antenna beam forming unit(ABFU)in the RF signal synthesis architecture is replaced by a multichannel digital signal synthesis module(MCDSSM).The system architecture is simple,the number of radar re-ceiving channels is arbitrarily variable and the access jamming equipment can be expanded.Furthermore,the pro-cessing flow of radar multi-channel echo signal module based on third-order intermodulation distortion simulation is given in the digital domain.The simulation experiment verifies the feasibility of the system architecture based on digital signal synthesis.

关 键 词：数字域信号合成 注入式仿真系统 天线波束形成单元 多通道数字信号合成模块 

分 类 号：TN97[电子电信—信号与信息处理]