| 基于距离-多普勒算法的机载大斜视SAR成像 |
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| 引用本文： | 上官珠,雷万明,于文震.基于距离-多普勒算法的机载大斜视SAR成像[J].中国电子科学研究院学报,2006,1(5):430-434. |
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| 作者姓名： | 上官珠 雷万明 于文震 |
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| 作者单位： | 南京电子技术研究所,南京,210013;南京电子技术研究所,南京,210013;南京电子技术研究所,南京,210013 |
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| 摘 要： | 根据机载大斜视SAR距离走动较大的特点，通过在方位时域和频域分别校正部分距离走动，结合二次距离压缩和方位三次匹配，提出了基于RD算法的机载大斜视SAR成像算法，该算法能有效的克服聚焦深度和方位时间-带宽积的限制。成像实验的结果表明，该算法可应用于斜视角较大的机载SAR成像系统。
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| 关 键 词： | 合成孔径雷达 斜视SAR 距离走动 |
| 文章编号： | 1673-5692（2006）05-430-05 |
| 收稿时间： | 2006-08-10 |
| 修稿时间： | 2006-10-12 |
A modified algorithm for high squint SAR |
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| SHANG Guan-zhu,LEI Wang-min,YU Wen-zhen.A modified algorithm for high squint SAR[J].Journal of China Academy of Electronics and Information Technology,2006,1(5):430-434. |
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| Authors: | SHANG Guan-zhu LEI Wang-min YU Wen-zhen |
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| Abstract: | With the large rang walk of the high squint SAR echo in consideration, and matching the secondary range compression with the cubic phase in azimuth, this paper presents a new algorithm which corrects part of the rang walk in the time domain and frequency domain respectively. The algorithm can overcome the limitations of the focus depth and time-bandwidth product in azimuth. The resuits of the simulations demonstrate that the algorithm is suitable for the high squint SAR imaging. |
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| Keywords: | SAR in squint range walk range-Doppler |
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