基于卫星导航定位系统自适应抗干扰控制  

An adaptive anti-jamming control based on satellite navigation and positioning system

作　　者：汪祖民[1] 张红娟[1] 王洪雁[1] 

机构地区：[1]大连大学信息工程学院,辽宁大连116622

出　　处：《信息技术》2016年第5期166-170,共5页Information Technology

摘　　要：在全球卫星导航系统抗干扰问题的研究中,自适应波束形成技术很好地解决了与信号不同来向的干扰的抑制问题。但对与信号同向的窄带干扰抑制程度不够,同时会滤除部分导航信号。针对以上问题,提出了一种改进的自适应波束干扰抑制算法。首先,通过级联IIR格型陷波器预测并抑制与信号同向的窄带干扰,然后,利用基于直接数据域自适应波束形成技术抑制剩余的宽带干扰。该改进算法能够有效的滤除窄带和宽带干扰,提升卫星导航系统的抗干扰性能,并在实际卫星通信应用中更具处理的实时性。最后,通过仿真实验证明了该算法的可行性。In the study of the anti-jamming problems of the global satellite navigation system,the adaptive beam-forming technology can well suppress the jams from different directions in which the space is different from signal direction,but it cannot suppress the narrowband jams which come from the same direction with the available signal absolutely in the meantime,it filters part of the navigation signals. To deal with above problems,an improved adaptive beam jamming suppression algorithm was proposed.Firstly,the narrowband jams could be forecasted and suppressed by using IIR lattice notch filter. Then,the rest of broadband jams could be suppressed by adaptive beam-forming technology based on direct data domain approach. The new algorithm can filter both narrowband and broadband jams out effectively. In addition,it can improve anti-jamming performance of satellite navigation system and be more of the realtime processing in realistic satellite communication application. Finally,the simulation results show the feasibility of the proposed algorithm.

关 键 词：IIR格型陷波器 直接数据域 自适应波束形成 单块拍处理 

分 类 号：TN967.1[电子电信—信号与信息处理]