BNR中参考信号多径对对消的影响分析  

Analysis of Reference Multipath Effect on Signal Cancellation for BNR

作　　者：鲁振兴[1] 洪永彬 付伟[1] 

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081

出　　处：《无线电工程》2016年第5期37-40,共4页Radio Engineering

基　　金：国家部委基金资助项目

摘　　要：双基地噪声雷达(BNR)中,参考信号中的多径成分会明显降低回波通道中直达波和杂波的对消性能。基于维纳滤波原理,推导出了对消器输出的均方特性,并讨论了参考信号多径的影响。分析表明,参考信号中的多径成分会引起远距离杂波对消性能的明显下降,并且随着多径成分的增强,直达波和近距杂波的对消性能也会明显降低。通过仿真验证了理论分析的有效性。For bistatic noise radars （BNR） ,the reference muhipath will degrade the cancellation performance of the direct signal and clutter in surveillance channel.Based on the principle of Wiener filter, the mean square of canceller output is derived and the effect of reference muhipath is discussed.It is shown that the reference muhipath will lead to a severe performance degradation for long-range clutter cancellation. As the multipath increases, the direct signal and short-range clutter cancellation performance will also degrade significantly.The effectiveness of the analysis is demonstrated by numerical simulations.

关 键 词：双基地噪声雷达 杂波对消 参考信号多径 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术]