| 分布式Spotlight SAR方位分辨率提高与地形效应补偿 |
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| 引用本文： | 袁新哲,郭振永,冯宏川,张平. 分布式Spotlight SAR方位分辨率提高与地形效应补偿[J]. 系统工程与电子技术, 2006, 28(12): 1794-1796 |
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| 作者姓名： | 袁新哲 郭振永 冯宏川 张平 |
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| 作者单位： | 1. 中国科学院电子学研究所,北京,100080;中国科学院研究生院,北京,100039
2. 中国科学院电子学研究所,北京,100080 |
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| 摘 要： | 研究了利用分布式小卫星提高Spotlight SAR方位向分辨率的原理和具体的实现方法。同时详细研究了地面高度对合成信号方位向分辨率的影响。与单SAR成像不同,地面高度除了使图像几何失真,还会导致方位分辨率恶化。针对其影响,提出了相应的补偿方法。最后通过数值仿真验证了上述方法的有效性。
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| 关 键 词： | 分布式小卫星 聚束模式 方位分辨率 地形效应 |
| 文章编号： | 1001-506X(2006)12-1794-03 |
| 修稿时间： | 2005-11-01 |
Method of distributed spotlight SAR azimuth resolution improvement and topographic effects compensation |
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| YUAN Xin-zhe,GUO Zhen-yong,FENG Hong-chuan,ZHANG Ping. Method of distributed spotlight SAR azimuth resolution improvement and topographic effects compensation[J]. System Engineering and Electronics, 2006, 28(12): 1794-1796 |
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| Authors: | YUAN Xin-zhe GUO Zhen-yong FENG Hong-chuan ZHANG Ping |
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| Abstract: | The principle of improving spotlight SAR azimuth resolution with multiple SAR surveys and the approach to implement it are presented.Meanwhile the topographic effects on azimuth resolution of synthesized signal is also analyzed.Different from single SAR imaging,topographic effects worsen the azimuth resolution of multiple SAR surveys besides geometry distortion.A method is proposed to offset topographic effects.The numerical simulation examples show the effectiveness of the method. |
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| Keywords: | multiple SAR surveys spotlight azimuth resolution topographic effect |
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