一种基于对角加载的特征子空间抗干扰算法  

Eigenspace Anti-jamming Algorithm Based on Diagonal Loading

作　　者：夏辉[1] 徐少波 徐如[2] XIA Hui;XU Shaobo;XU Ru(Unit 92728,PLA,Shanghai 200436,China;The 54th Research Institute of CETC,Shijiazhuang 050081,China)

机构地区：[1]中国人民解放军92728部队 [2]中国电子科技集团公司第五十四研究所

出　　处：《无线电工程》2018年第11期66-70,共5页Radio Engineering

基　　金：国家重点研发计划基金资助项目(2016YFB0502402);国家自然科学基金资助项目(91638203)

摘　　要：卫星导航系统能为全球陆、海、空、天的各类军民载体提供全天候24 h连续高精度的三维位置、速度和精密时间信息。由于自适应波束形成技术在导航领域的广泛应用,其稳健性已成为阵列信号处理研究中的热点领域之一。功率倒置(PI)算法是常用的一种自适应抗干扰算法,而PI算法在非理想环境下性能严重下滑。针对传统PI算法存在的缺点,提出了基于对角加载的特征子空间(DL-ESB-PI)抗干扰算法。仿真实验结果表明,DL-ESB-PI算法能够改善PI算法的稳健性,在非理想环境下依然保持优异的性能。The satellite navigation system provides 24-hour continuous high-precision three-dimensional position,velocity and time information for the global land,sea,air and space systems of military carriers or civilian carriers. Because of the broad application of adaptive beamforming technology in GNSS,the robustness of adaptive beamforming has been one of the research focuses of the array signal processing.The power inversion algorithm is frequently used in adaptive anti-jamming field,but the PI algorithm will have a serious performance decline under the non-ideal condition.In view of the shortcomings of PI algorithm,the eigenspace beamformer based on diagonal loading is proposed. Simulation results demonstrate that,the DL-ESB-PI algorithm can improve the performance of PI algorithm,and will have an excellent performance under the non-ideal condition.

关 键 词：卫星导航系统 抗干扰 功率倒置 对角加载 特征子空间 

分 类 号：TN911.7[电子电信—通信与信息系统]