| 利用频谱合成实现分布式SAR高分辨力成像 |
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| 引用本文： | 闫鸿慧, 王岩飞, 张冰尘. 利用频谱合成实现分布式SAR高分辨力成像[J]. 电子与信息学报, 2006, 28(2): 345-349. |
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| 作者姓名： | 闫鸿慧 王岩飞 张冰尘 |
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| 作者单位： | 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;中国科学院电子学研究所,北京,100080 |
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| 摘 要： | 该文主要研究了利用频谱合成实现分布式SAR高分辨力成像的方法。在分布式SAR系统中，不同卫星对同一地域观测时，其距离向频谱及方位向频谱均具有一定的相对频谱偏移。利用该频谱偏移进行频谱合成形成较宽的距离向频谱及方位向频谱，从而提高系统的距离向分辨力及方位向分辨力。在频谱合成过程中可首先利用INSAR技术估计出多幅图像的相位差，再利用该相位差进行相位校正、图像合成即可形成具有较高分辨率的图像。该文对这一方法进行了理论分析，并给出了仿真结果。
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| 关 键 词： | 分布式卫星 合成孔径雷达(SAR) 高分辨力成像 |
| 文章编号： | 1009-5896（2006）02-0345-05 |
| 收稿时间： | 2004-08-02 |
| 修稿时间： | 2004-12-07 |
Distributed Satellites SAR High Resolution Imaging via Spectral Synthesis |
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| Yan Hong-hui, Wang Yan-fei, Zhang Bing-chen. Distributed Satellites SAR High Resolution Imaging via Spectral Synthesis[J]. Journal of Electronics & Information Technology, 2006, 28(2): 345-349. |
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| Authors: | Yan Hong-hui Wang Yan-fei Zhang Bing-chen |
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| Affiliation: | Institute of Electronics, Chinese Academy of Sciences, Beijing 100080, China;Graduate School of the Chinese Academy of Sciences, Beijing 100039, China |
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| Abstract: | In this paper, a distributed satellites SAR high resolution imaging method based on spectral synthesis is introduced. In distributed satellites SAR system, the scattering spectrums relative to the same scene acquired by different satellites have spectrum shifts in both range and azimuth directions, when join these shifted spectrums to a wider range and azimuth spectrum, a higher range and azimuth resolution can be acquired. In the processing, InSAR technique can be used to estimate the phase difference of the images. And after phase correction procedure, image combination procedure has been done, a higher resolution image both in range and azimuth direction would be generated. In this paper a theoretical analysis of this method is given, and the simulation results are also provided. |
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| Keywords: | Distributed satellites Synthetic Aperture Radar (SAR) High resolution imaging |
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