基于分数阶字典的间歇采样转发干扰自适应抑制算法
TN947; 间歇采样转发干扰是一种对现有体制雷达具备高度威胁的新型干扰,典型样式包括间歇采样直接转发干扰、间歇采样重复转发干扰和间歇采样循环转发干扰.干扰信号与真实回波时频域、分数阶域混叠,常规信号处理方法难以做到有效分离.针对该问题,分析了3种干扰样式时域、最优分数阶域特征,构造了两种分数阶正交字典,即分数阶大字典和分数阶联合字典,区分弱干扰背景回波信号和强干扰背景回波信号,采取不同的干扰抑制方法,从而构建了基于分数阶字典的间歇采样转发干扰自适应抑制算法.仿真结果表明,所提算法适用强弱干扰背景,弱干扰背景下恢复信号与真实回波相似度更高,强干扰背景下恢复信号信噪比(signal to noi...
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| Published in | 系统工程与电子技术 Vol. 42; no. 7; pp. 1439 - 1448 |
|---|---|
| Main Authors | , , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
海军航空大学信息融合研究所,山东烟台264001
01.07.2020
中国人民解放军94326部队,山东济南250000%海军航空大学信息融合研究所,山东烟台,264001 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1001-506X |
| DOI | 10.3969/j.issn.1001-506X.2020.07.02 |
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| Abstract | TN947; 间歇采样转发干扰是一种对现有体制雷达具备高度威胁的新型干扰,典型样式包括间歇采样直接转发干扰、间歇采样重复转发干扰和间歇采样循环转发干扰.干扰信号与真实回波时频域、分数阶域混叠,常规信号处理方法难以做到有效分离.针对该问题,分析了3种干扰样式时域、最优分数阶域特征,构造了两种分数阶正交字典,即分数阶大字典和分数阶联合字典,区分弱干扰背景回波信号和强干扰背景回波信号,采取不同的干扰抑制方法,从而构建了基于分数阶字典的间歇采样转发干扰自适应抑制算法.仿真结果表明,所提算法适用强弱干扰背景,弱干扰背景下恢复信号与真实回波相似度更高,强干扰背景下恢复信号信噪比(signal to noise ratio,SNR)损失更低. |
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| AbstractList | TN947; 间歇采样转发干扰是一种对现有体制雷达具备高度威胁的新型干扰,典型样式包括间歇采样直接转发干扰、间歇采样重复转发干扰和间歇采样循环转发干扰.干扰信号与真实回波时频域、分数阶域混叠,常规信号处理方法难以做到有效分离.针对该问题,分析了3种干扰样式时域、最优分数阶域特征,构造了两种分数阶正交字典,即分数阶大字典和分数阶联合字典,区分弱干扰背景回波信号和强干扰背景回波信号,采取不同的干扰抑制方法,从而构建了基于分数阶字典的间歇采样转发干扰自适应抑制算法.仿真结果表明,所提算法适用强弱干扰背景,弱干扰背景下恢复信号与真实回波相似度更高,强干扰背景下恢复信号信噪比(signal to noise ratio,SNR)损失更低. |
| Author | 王国宏 张亮 辛婷婷 张翔宇 李思文 |
| AuthorAffiliation | 海军航空大学信息融合研究所,山东烟台264001;中国人民解放军94326部队,山东济南250000%海军航空大学信息融合研究所,山东烟台,264001 |
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| Author_FL | XIN Tingting ZHANG Liang LI Siwen WANG Guohong ZHANG Xiangyu |
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| Publisher | 海军航空大学信息融合研究所,山东烟台264001 中国人民解放军94326部队,山东济南250000%海军航空大学信息融合研究所,山东烟台,264001 |
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| Title | 基于分数阶字典的间歇采样转发干扰自适应抑制算法 |
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