| 星载极化干涉SAR系统电离层去相干研究 |
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| 引用本文： | 夏东坤,李洋,乞耀龙,洪文,吴一戎.星载极化干涉SAR系统电离层去相干研究[J].电子学报,2011,39(6):1309-1314. |
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| 作者姓名： | 夏东坤 李洋 乞耀龙 洪文 吴一戎 |
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| 作者单位： | 中国科学技术大学电子工程与信息科学系;中国科学院电子学研究所;微波成像技术国家级重点实验室; |
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| 基金项目： | 先进极化技术林业应用的研究和论证(No.2008DFA11690); 国家自然科学基金重大项目“多维度微波成像基础理论与关键技术”(No.60890071) |
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| 摘 要： | 中低频段(UHF/VHF、P、L)星载极化干涉SAR系统运行于电离层之上,会受到相位扰动、法拉第旋转等电离层效应的影响,从而降低系统的成像质量以及参数反演的准确度.本文从电离层造成的成像散焦和极化平面旋转角度出发,重点分析和推导了电离层不规则体去相干以及法拉第旋转效应对相干最优的影响,并通过仿真实验模拟了典型系统条件以...
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| 关 键 词： | 电离层 去相干 法拉第旋转 电离层不规则体 |
| 收稿时间： | 2010-06-04 |
Investigation on Ionospheric Decorrelation of Space-Borne Pol-in-SAR Systems |
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| XIA Dong-kun,LI Yang,QI Yao-long,HONG Wen,WU Yi-rong.Investigation on Ionospheric Decorrelation of Space-Borne Pol-in-SAR Systems[J].Acta Electronica Sinica,2011,39(6):1309-1314. |
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| Authors: | XIA Dong-kun LI Yang QI Yao-long HONG Wen WU Yi-rong |
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| Affiliation: | XIA Dong-kun1,LI Yang2,3,QI Yao-long2,HONG Wen1,2,WU Yi-rong1,3(1.Department of Electronic Engineering and Information Science,USTC,Hefei,Anhui 230027,China,2.Institute of Electronics,Chinese Academy of Sciences,Beijing 100190,3.National Key Lab of Science and Technology on Microwave Imaging,China) |
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| Abstract: | The space-borne polarimetric interferometric synthetic aperture radar(POLinSAR) working at UHF/VHF,P and L bands are sensitive to the ionospheric effects such as phase perturbation,Faraday rotation,etc.which will cause POLinSAR system performance deterioration in imaging and geophysical parameter inversion.This paper analyzed the image defocusing and polarization rotation decorrelation induced by ionospheric irregularities and Faraday rotation.In addition,simulations with typical system parameters and ionos... |
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| Keywords: | ionosphere decorrelation Faraday rotation ionospheric irregularities |
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