| 星载干涉SAR中的基线问题 |
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| 引用本文： | 徐华平,周荫清,李春升.星载干涉SAR中的基线问题[J].电子学报,2003,31(3):437-439. |
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| 作者姓名： | 徐华平 周荫清 李春升 |
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| 作者单位： | 北京航空航天大学电子工程系,北京 100083 |
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| 基金项目： | 国家“8 63计划”资助项目 (No .863 30 8 1 4 0 1 ) |
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| 摘 要： | 基线在星载干涉SAR的系统设计和数据处理中起着非常重要的作用.本文比较全面地阐述了空间基线在星载干涉SAR中的作用.特别分析了星载干涉SAR中空间基线对SAR图像相关性、地距分辨率以及干涉SAR数据处理中的距离向平地效应和多视平均处理的影响.讨论了星载干涉SAR空间基线的设计问题,推导了空间最优基线的确定公式.最后进行了计算机仿真,仿真结果表明分析正确.
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| 关 键 词： | 基线 星载干涉SAR 数据处理 最优 设计 |
| 文章编号： | 0372-2112(2003)03-0437-03 |
The Analysis of Baseline in Spaceborne Interferometric SAR |
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| XU Hua-ping,ZHOU Yin-qing,LI Chun-sheng.The Analysis of Baseline in Spaceborne Interferometric SAR[J].Acta Electronica Sinica,2003,31(3):437-439. |
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| Authors: | XU Hua-ping ZHOU Yin-qing LI Chun-sheng |
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| Affiliation: | Dept of Electronic Engineering,Beijing University of Aeronautics and Astronautics,Beijing 100083,China |
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| Abstract: | Two-pass spaceborne interferometric SAR is used to produce three-dimensional terrain map by estimating the unwrapped interferometric phase and transferring the phase into terrain height.Baseline is very important for spaceborne interferometric SAR system design and data processing.In this paper,spatial baseline in spaceborne interferometric SAR was analyzed in many aspects.The statistical correlation between two SAR images from different satellite passes was presented.Influences of baseline on range flat ground frequency and multilook processing were discussed.The equation to determine the optimal spatial baseline was deduced.Finally,the results of computer simulating were presented to testify the correction of analysis. |
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| Keywords: | baseline spaceborne interferometric SAR data processing optimal design |
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