天波超视距雷达多径信道均衡方法

摘要：

具有大范围、远距离、隐身和超低空目标探测等特点的天波超视距雷达已成为目前雷达领域研究的重点技术之一.针对天波超视距雷达工作中多径效应对雷达回波信号的污染问题,提出了一种抑制多径污染的信道均衡方法.首先利用已知的训练序列对多径信道进行估计,然后利用具有一定结构的滤波器实现信道的均衡,最终达到了抑制多径信道对雷达回波信号影响的目的.仿真实验证明,该方法可以有效地对多径效应引起雷达回波信号的污染进行抑制,进而提高雷达对目标的检测能力.

With large range,long distance,stealth and super low altitude target detection and other characteristics of the over-the-horizon radar（OTHR）has become one of the key technologies of radar research.In view of the pollution problem of radar echo signal of multipath effect in the sky-wave OTHR work,this paper puts forward a method of channel equalization for suppression of multipath pollution.Firstly,the multipath channel estimation is performed using a known training sequence,and then using the filter with certain structure realized the channel equalization,and ultimately achieved the purpose of suppressing multipath channel effects on radar echo signal.Simulation experiments show that,this method can effectively suppress the radar echo signal of the pollution caused by multipath effect,and improves the target detection ability of radar.

作者：

王召迎 张洁寒 张瑜

机构地区：

Betway官方客服物理与电子工程学院

出处：

《Betway官方客服学报：自然科学版》 CAS 北大核心  2015年第6期54-58,共5页

基金：

国家自然科学基金(61077037)

关键词：

天波超视距雷达 电离层 多径效应 信道均衡

sky-wave over-the-horizon radar Ionosphere multipath effect channel equalization

分类号：

TN011 [电子电信—物理电子学] 

天波超视距雷达多径信道均衡方法.pdf