| 前视SAR系统的方位分辨率特性 |
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| 引用本文： | 公岷,刘光炎,黄顺吉.前视SAR系统的方位分辨率特性[J].信号处理,2003,19(4):324-328. |
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| 作者姓名： | 公岷 刘光炎 黄顺吉 |
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| 作者单位： | 1. 电子科技大学电工系,成都,610054
2. 电子科技大学电工系,成都,610054;南京电子技术研究所,南京,210013 |
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| 基金项目： | 国家863资助项目:863-2.5.2.2 |
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| 摘 要： | 针对星载SAR前视模式与一般正侧视模式存在的明显不同,本文详细分析了前视SAR的多普勒特性,即多普勒频率、多普勒带宽;指出前视SAR的方位分辨率与天线的孔径长度无关,而是与载波频率、雷达平台高度、方位向地面距离等因数有关,并仔细讨论了各因数对方位分辨率的影响;前视SAR成像对系统参数脉冲重复频率、波束投射角的限制。
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| 关 键 词： | 前视模式 合成孔径雷达 多普勒频率 方位分辨率 |
| 修稿时间： | 2002年8月3日 |
The Azimuth Resolution Properties of the Forward-looking SAR System |
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| Gong Min Liu Guangyan Huang Shunji.The Azimuth Resolution Properties of the Forward-looking SAR System[J].Signal Processing,2003,19(4):324-328. |
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| Authors: | Gong Min Liu Guangyan Huang Shunji |
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| Abstract: | Based on the difference between the forward-looking mode and the side-looking mode of spaceborne SAR system, this paper carefully analysis the Doppler properties of the forward-looking SAR (FSAR) mode: Doppler frequency and Doppler bandwidth etc; And point out the relation of the azimuth resolution of FSAR with carrier frequency, platform altitude and azimuth range in the surface of the Earth etc. and the azimuth resolution of FSAR isn't relate with antenna aperture length; And carefully discuss that these factors affect the azimuth resolution and that FSAR constrain to pulse repetition frequency (PRF) and elevation angle. |
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| Keywords: | forward-looking mode SAR doppler frequency azimuth resolution |
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