| 运动阵列非重叠孔径扩展算法 |
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| 引用本文： | 王健鹏,柳征,姜文利.运动阵列非重叠孔径扩展算法[J].宇航学报,2011,32(7). |
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| 作者姓名： | 王健鹏 柳征 姜文利 |
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| 作者单位： | 国防科技大学电子科学与工程学院,长沙,410073 |
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| 摘 要： | 现有线阵列被动合成阵列算法无法满足非连续信号和非均匀线阵列的处理需要,难以被直接用来提高运动线阵列对时域重叠脉冲信号的空间分辨能力.针对这一问题,本文提出一种能够同时满足对非连续信号和非均匀线阵列处理需求的运动阵列非重叠孔径扩展算法.该算法首先通过二维MUSIC算法估计运动阵列的“相位校正因子”,进而完成阵列孔径扩展实现对多个时域重叠信号的高分辨方向估计.通过仿真研究可知:小孔径运动阵列利用本算法在不牺牲方向估计精度的条件下,可以有效提高对多信号的分辨能力,且具有较好的低信噪比适应能力.
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| 关 键 词： | 运动阵列 扩展阵列孔径 脉冲信号 被动合成阵列 多重信号分类 |
A Non-Overlap Mode-Based Extended Aperture Algorithm for Moving Array |
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| WANG Jian-peng,LIU Zheng,JIANG Wen-li.A Non-Overlap Mode-Based Extended Aperture Algorithm for Moving Array[J].Journal of Astronautics,2011,32(7). |
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| Authors: | WANG Jian-peng LIU Zheng JIANG Wen-li |
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| Institution: | WANG Jian-peng,LIU Zheng,JIANG Wen-li(School of Electronic Science and Engineering,National Univ.of Defense Technology,Changsha 410073,China) |
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| Abstract: | The existing passive synthetic array algorithms can not be applied in the domains of noncontinuous signals and nonuniform array,and these algorithms can not be applied directly to improve the resolution power of pulse signals for moving linear arrays.Accordingly,a non-overlap mode-based new extended aperture algorithm for moving array applied in the domains of both noncontinuous signals and nonuniform arrays is proposed.According to this new algorithm,first the phase correction factors are estimated by usin... |
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| Keywords: | Moving array Extended array aperture Pulse signals Passive synthetic array Multiple signal classification(MUSIC) |
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