| 机载前视SAR三维成像原理及分辨率分析 |
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| 引用本文： | 任笑真,杨汝良. 机载前视SAR三维成像原理及分辨率分析[J]. 电子科技大学学报(自然科学版), 2010, 39(5): 706. DOI: 10.3969/j.issn.1001-0548.2010.05.013 |
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| 作者姓名： | 任笑真 杨汝良 |
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| 作者单位： | 1.中国科学院电子学研究所 北京 海淀区 100190; |
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| 摘 要： | 提出一种新型的采用天线阵模式的机载前视合成孔径雷达(SAR)系统，分析了其三维成像原理。根据前视SAR的成像几何模型和回波信号特点给出了实现前视SAR三维成像的处理流程，详细推导了前视SAR的三维分辨率。模拟了X波段前视SAR点目标回波并进行了三维成像实验。仿真结果表明前视SAR系统能够实现三维成像，验证了本文算法的有效性。
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| 关 键 词： | 天线阵 前视 分辨率 合成孔径雷达 三维成像 |
| 收稿时间： | 2009-04-08 |
Three-Dimensional Imaging Principle and Resolutions Analysis for Air-Borne Forward-Looking SAR |
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| Affiliation: | 1.The Institute of Electronics,Chinese Academy of Sciences Haidian Beijing 100190;2.The Graduate University,Chinese Academy of Sciences Haidian Beijing 100190 |
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| Abstract: | In this paper, an innovative air-borne forward-looking SAR system using antenna array is studied,and three-dimensional imaging principle is analyzed. A three-dimensional imaging process is proposed forair-borne forward-looking SAR based on the image geometry and the characteristic of echo signal, and theresolutions in three dimensions are derived. Raw data of forward-looking SAR in X-band is simulated andthree-dimensional image is achieved. The imaging result is analyzed, and simulation results show that theforward-looking SAR could achieve three-dimensional imaging, and also confirm the validity of the proposedalgorithm. |
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