| 基于MIMO雷达的高分辨成像方法 |
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| 引用本文： | 王怀军 许红波 陆珉 粟毅. 基于MIMO雷达的高分辨成像方法[J]. 微波学报, 2009, 25(5): 79-83 |
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| 作者姓名： | 王怀军 许红波 陆珉 粟毅 |
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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： | 以实现对空中目标的高分辨成像为目的,文章提出了基于MIMO雷达的技术解决方案.首先分析了MIMO雷达的工作原理和实现形式,而后建立了MIMO雷达成像模型,并推导出MIMO雷达多通道回波与目标空间频谱的对应关系.通过分析目标空间频谱的支撑区分布,论证了MIMO雷达阵列方位向的高分辨成像能力.最后进行了成像仿真实验.结果表明:在同等接收阵列条件下,MIMO阵列与实孔径阵列相比方位分辨率能够得到数倍的提高.
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| 关 键 词： | 多输入多输出雷达 高分辨成像 空间频谱 |
High-Resolution Imaging Method Based on MIMO Radar |
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| WANG Huai-jun,XU Hong-bo,LU Min,SU Yi. High-Resolution Imaging Method Based on MIMO Radar[J]. Journal of Microwaves, 2009, 25(5): 79-83 |
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| Authors: | WANG Huai-jun XU Hong-bo LU Min SU Yi |
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| Affiliation: | School of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China |
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| Abstract: | For the purpose of obtaining high-resolution image of airborne moving target, this paper proposes a technical approach based on MIMO radar. Firstly, the basic principle and scheme of MIMO radar are analyzed. Then MIMO radar imaging model is founded. The relationship between MIMO radar multi-channel data and the spatial spectrum of target is derived. The high azimuth resolution of MIMO radar array is proved through analysis of spatial spectral region of support. Finally , simulations are performed and the results show that MIMO radar array can improve the azimuth resolution by several times compared with real aperture array that has the same receiving array as MIMO radar. |
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| Keywords: | MIMO radar High-resolution imaging Spatial spectrum |
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