复杂环境下的DSSS信号抗均匀频谱干扰研究  

Research on the Anti-interference with Uniform Spectrum for DSSS Signal in Complex Environment

作　　者：刘芳 李成旺 贡胜男 LIU Fang;LI Chengwang;GONG Shengnan(Shenyang Ligong University,Shenyang 110159,China)

机构地区：[1]沈阳理工大学通信与网络工程中心,沈阳110159

出　　处：《沈阳理工大学学报》2023年第5期29-32,39,共5页Journal of Shenyang Ligong University

基　　金：国家自然科学基金项目(61501309,61971291);中央引导地方科技发展项目(2022020128-JH6/1001);沈阳市自然科学基金项目(22-315-6-10)。

摘　　要：随着直接序列扩频(DSSS)信号的广泛应用,复杂环境下的DSSS信号抗干扰研究尤为重要。以直扩系统中常见的均匀频谱信号为例,进行信号抗干扰研究。首先分析均匀频谱信号特性,进而设计直扩信号同步环路模型,通过均匀频谱信号带宽、中心频偏、能量的有机配置,研究均匀频谱信号对DSSS信号同步环路的影响,给出不同条件下最佳抗干扰方案,为通信接收机抗干扰及保障技术提供理论基础。For the fact that direct sequence spread spectrum(DSSS)signals are widely used,it is particularly important to study the anti-jamming of DSSS signals in complex environ-ments.For this reason,the anti-jamming research is carried out on the basis of the common uniform spectrum signal interference in the direct sequence spread spectrum system.First,the characteristics of uniform spectrum signal are analyzed,and then the DS synchronous loop model is designed.Further,through the organic configuration of uniform spectrum sig-nal bandwidth,center frequency offset,and energy,the impact of uniform spectrum signal on the DS signal synchronous loop is studied.Finally,for the purpose of optimal anti-interfer-ence,reasonable suggestions on anti-interference in different conditions are made.This re-search can provide a theoretical basis for anti-jamming and security technology of communi-cation receiver.

关 键 词：直接序列扩频 均匀频谱 同步环路 信号抗干扰 

分 类 号：TP92[自动化与计算机技术]