基于FRFT的伪码引信自适应LFM干扰对消方法

被引：6

作者：

张淑宁

赵惠昌

涂友超

机构：

[1] 南京理工大学电光学院

来源：

电子与信息学报 | 2008年 / 05期

关键词：

伪码引信; LFM干扰; 相关输出; FRFT; 自适应干扰对消;

D O I：

暂无

中图分类号：

TJ430 [一般性问题];

学科分类号：

082601 ;

摘要：

该文分析了LFM干扰对伪码引信相关输出的影响,当干扰强度超出伪码引信自身的抗干扰容限时,相关输出严重恶化,因此必须采取相应的抗干扰措施。考虑到LFM干扰与伪码引信有用信号间存在着强的时频耦合,提出了基于FRFT的自适应干扰对消方法。该方法首先对观察信号进行FRFT,估计干扰的特征参数,利用估计出的干扰参数构造自适应干扰对消器,将干扰去除。仿真表明,该方法能够有效滤除LFM干扰,相关输出得到显著改善,该方法对单分量和多分量干扰均有效,不受交叉项影响。

引用

页码：1084 / 1087

页数：4

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