| 聚束SAR应用条带SAR方法成像 |
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| 引用本文： | 丰韬,王开志,刘兴钊. 聚束SAR应用条带SAR方法成像[J]. 现代雷达, 2007, 29(6): 46-50 |
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| 作者姓名： | 丰韬 王开志 刘兴钊 |
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| 作者单位： | 上海交通大学电子工程系,上海,200030 |
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| 摘 要： | 在分析聚束合成孔径雷达（SAR）方位向时频关系的基础上，提出了一种新的全孔径分辨率SAR成像算法。根据SAR在条带与聚束模式下回波信号之间的差别，利用现有成熟的条带SAR成像算法实现先对聚束SAR各方位向子孔径成像，而后再将各方位子孔径带宽合成为全孔径带宽，以形成具有全孔径分辨率的SAR图像，极大降低了系统PRF的要求。
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| 关 键 词： | 聚束式SAR成像 子孔径合成 频带拼接 |
| 修稿时间： | 2007-01-122007-04-15 |
Application of Strip Mode Imaging to Spotlight SAR Imaging System |
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| FENG Tao,WANG Kai-zhi,LIU Xing-zhao. Application of Strip Mode Imaging to Spotlight SAR Imaging System[J]. Modern Radar, 2007, 29(6): 46-50 |
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| Authors: | FENG Tao WANG Kai-zhi LIU Xing-zhao |
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| Affiliation: | Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai 200030, China |
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| Abstract: | In this paper, basing on analyzing the time-frequency relationship in azimuth of Spotlight SAR, and according to the difference of the signals of spotlight SAR and strip SAR, a new method which can realize the imaging of spotlight SAR by utilizing the squint mode imaging method of strip SAR is proposed. The azimuth signal of a sub-aperture can be regarded as a sub - band of the full aperture. After imaging the spotlight SAR signal using the imaging method for squint mode strip SAR, the sub-apertures are combined. The having full aperture resolution image is recovered and the azimuth resolution is improved. |
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| Keywords: | spotlight SAR imaging sub-aperture synthesis band combination |
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