| 基于快速极坐标格式算法的MIMO雷达虚拟孔径成像 |
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| 引用本文： | 王海青,李彧晟,朱晓华.基于快速极坐标格式算法的MIMO雷达虚拟孔径成像[J].宇航学报,2013,34(5):715-720. |
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| 作者姓名： | 王海青 李彧晟 朱晓华 |
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| 作者单位： | 南京理工大学电子工程与光电技术学院，南京 210016 |
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| 基金项目： | 国家自然科学基金（61071163，61201367）；江苏省自然科学基金（BK2012382）；中国博士后基金（20100481143）；江苏省博士后基金（1101093C） |
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| 摘 要： | 针对共址多输入多输出（Multiple Input Multiple Output，MIMO）雷达在单次快拍下的虚拟孔径成像问题，分析了MIMO雷达虚拟合成阵列，建立了MIMO雷达极坐标格式波数域回波模型，分析了基于距离向和方位向尺度变换的空间谱转化，指出MIMO雷达方位向尺度变换不再是Keystone变换，提出了一种新的MIMO雷达快速极坐标格式成像算法。仿真表明了该文方法的有效性。
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| 关 键 词： | 多输入多输出雷达 虚拟孔径 极坐标格式算法 空间谱 |
| 收稿时间： | 2012-06-01 |
MIMO Radar Virtual Aperture Imaging Based on Fast Polar Format Algorithm |
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| WANG Hai qing,LI Yu sheng,ZHU Xiao hua.MIMO Radar Virtual Aperture Imaging Based on Fast Polar Format Algorithm[J].Journal of Astronautics,2013,34(5):715-720. |
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| Authors: | WANG Hai qing LI Yu sheng ZHU Xiao hua |
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| Affiliation: | School of Electronic and Optical Engineering, Nanjing University of Science & Technology, Nanjing 210016, China |
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| Abstract: | To solve the problem of virtual aperture imaging for colocated multiple input multiple output (MIMO) radar under single snapshot, the virtual aperture array is analyzed for the MIMO radar and the echo model of polar format is built in this paper. The spatial spectrum transformation based on scale transformation of the range and azimuth domains is analyzed. It is pointed out that scale transformation of the azimuth domain can not be considered as the Keystone transformation for MIMO radar. A new fast polar format algorithm(PFA) is proposed. Simulation results verify the effectiveness of the method. |
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| Keywords: | Multiple input multiple output radar Virtual aperture Polar format algorithm(PFA) Spatial spectrum |
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