| 共形阵机载雷达杂波非平稳特性及抑制方法研究 |
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| 引用本文： | 段克清,谢文冲,王永良. 共形阵机载雷达杂波非平稳特性及抑制方法研究[J]. 中国科学:信息科学, 2011, 0(12) |
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| 作者姓名： | 段克清 谢文冲 王永良 |
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| 作者单位： | 国防科技大学电子科学与工程学院;空军雷达学院雷达兵器运用工程军队重点实验室; |
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| 基金项目： | 国家杰出青年科学基金(批准号:60925005); 国家自然科学基金重点项目(批准号:60736009); 国家自然科学基金(批准号:61102169)资助 |
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| 摘 要： | 分析了共形阵机载雷达的杂波非平稳特性,并结合该特性提出了一种非平稳杂波环境下的Doppler补偿方法.不同于传统的线阵天线,共形阵天线的三维空间结构决定了应在四维频域研究其杂波分布.针对这个特点,对共形阵机载雷达的杂波非平稳特性进行了理论分析,揭示了共形阵杂波非平稳现象的本质机理,并得出在任意摆放姿态下共形阵机载雷达均存在杂波非平稳现象这一结论.在此基础上,提出了在四维频域对主杂波进行联合补偿的空时自适应处理(space-time adaptive processing,STAP)方法.经仿真验证,在共形阵机载雷达非平稳杂波环境下,利用本文所提STAP方法的杂波抑制性能显著优于传统的Doppler补偿STAP方法.
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| 关 键 词： | 共形阵 空时自适应处理 非平稳 杂波抑制 |
Nonstationary clutter suppression for airborne conformal array radar |
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| DUAN KeQing,,XIE WenChong , WANG YongLiang School of Electronic Science , Engineering,National University of Defense Technology,Changsha ,China, Key Research Lab,Wuhan Radar Academy,Wuhan. Nonstationary clutter suppression for airborne conformal array radar[J]. Scientia Sinica Informationis, 2011, 0(12) |
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| Authors: | DUAN KeQing XIE WenChong & WANG YongLiang School of Electronic Science Engineering National University of Defense Technology Changsha China Key Research Lab Wuhan Radar Academy Wuhan |
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| Affiliation: | DUAN KeQing1,2,XIE WenChong2 & WANG YongLiang2 1 School of Electronic Science and Engineering,National University of Defense Technology,Changsha 410073,China,2 Key Research Lab,Wuhan Radar Academy,Wuhan 430019 |
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| Abstract: | The essence of nonstationary clutter for airborne radar with conformal antennas array(CAA) is analyzed,and an angle-Doppler compensation method for clutter suppression is proposed.Compared with the uniform linear antennas array(LAA),the clutter angle-Doppler spectrum distribution of CAA should be described in four-dimension space,i.e.,three-dimension space and time,because the elements of CAA are distributed in three-dimension space.According to this theory,the clutter nonstationarity for airborne radar wit... |
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| Keywords: | conformal antennas array(CAA) space-time adaptive processing(STAP) nonstationarity clutter suppression |
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