基于边带相关置换的BDS抗窄带干扰算法  

Narrow-Band Interference Suppression Algorithm on BDS Based on Side Correlation Replacement

作　　者：胡彦逢[1] 曹可劲[1] 李豹[1] 朱银兵[1] 

机构地区：[1]海军工程大学导航工程系,湖北武汉430033

出　　处：《现代防御技术》2014年第5期75-79,共5页Modern Defence Technology

基　　金：国家自然科学基金项目(61004126)

摘　　要：提出了一种新的窄带抗干扰算法,利用北斗卫星导航系统(BDS)信号体制频谱的对称性,通过将受到污染的频谱部分替换为未受污染频谱,而对于对称干扰,则将其置零,以达到最大程度恢复原信号的目的。仿真表明,该方法扩展了常规边带相关置换法的应用范围,其抗干扰效果优于常规的频域干扰置零方法。A new algorithm referring to the spectrum symmetry of Beidou satellite navigation system （BDS） is proposed. Then narrow-band interference was eliminated by replacing the contaminated spec- trum replacement parts with the unpolluted spectrum, and for the symmetric interference spectrum line, it is set to zero, in order to achieve the purpose of restoring the original signal to the greatest extent. Simu- lation results show that this method extends the conventional sideband related the application range of the displacement method and its performance is superior to the conventional method of transform domain in- terference zeros.

关 键 词：窄带干扰 抗干扰 边带相关 北斗卫星导航系统 

分 类 号：TN973.3[电子电信—信号与信息处理]