| 基于编队卫星的SAR高方位向分辨率成像 |
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| 引用本文： | 李俐,王岩飞,张冰尘,闫鸿慧.基于编队卫星的SAR高方位向分辨率成像[J].系统工程与电子技术,2005,27(8):1354-1356. |
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| 作者姓名： | 李俐 王岩飞 张冰尘 闫鸿慧 |
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| 作者单位： | 中国科学院电子学研究所,北京,100080 |
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| 基金项目： | 中国科学院预研项目基金资助课题(422010103) |
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| 摘 要： | 针对编队卫星被动工作方式下提高SAR方位向分辨率的构型,在建立信号回波模型和详细分析提高方位向分辨率原理的基础上,提出了对基线的要求及频谱合成算法。该算法充分利用了编队卫星SAR系统中不同接收机的视角信息,有效地完成了多组不同多普勒位置的信号相干合成,实现了系统分辨率的提高。计算机仿真结果表明该算法具有良好的性能。
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| 关 键 词： | 编队卫星 合成孔径雷达 高方位向分辨率 频谱合成 |
| 文章编号： | 1001-506X(2005)08-1354-03 |
| 修稿时间： | 2004年6月10日 |
SAR high azimuth resolution imaging based on formation flying satellites |
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| LI Li,WANG Yan-fei,ZHANG Bing-chen,YAN Hong-hui.SAR high azimuth resolution imaging based on formation flying satellites[J].System Engineering and Electronics,2005,27(8):1354-1356. |
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| Authors: | LI Li WANG Yan-fei ZHANG Bing-chen YAN Hong-hui |
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| Abstract: | Based on the configuration of formation flying satellites for improving SAR azimuth resolution in passive mode, a radar signal response model is developed and its working mechanism is analyzed in detail. Furthermore, the rule for selecting the baseline and the algorithm of spectrum synthesis are proposed. The proposed approach efficiently synthesizes the signals of different Doppler spectrums by fully utilizing the angle information of the receivers so that the imaging resolution improves distinctly. The computer simulations also show its excellent performance. |
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| Keywords: | formation flying satellites synthetic aperture radar high azimuth resolution spectrum synthesis |
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