基于ESPRIT算法的极化干涉SAR植被高度反演研究
由于存在着去相干分量,利用ESPRIT（旋转不变技术）算法对植被区域的极化干涉SAR（PolInSAR）数据进行反演的结果有较严重偏差。针对这一问题,结合极化干涉相干最优理论及其物理散射机制,引入新的散射矢量——相干最优化散射矢量,提出一种改进的基于ESPRIT的植被高度反算法。最后,利用欧空局（ESA）提供的模拟L波段全极化干涉数据对改进算法的有效性进行验证,试验结果证明改进算法能很大程度地提高反演的精度。...
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| Published in | 测绘学报 Vol. 40; no. 3; pp. 296 - 300 |
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| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
中国电子科技集团公司第三十八研究所,安徽合肥,230088%北京航天自动控制研究所,北京,100854%中国科学院电子学研究所,北京,100190
2011
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1001-1595 |
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| Abstract | 由于存在着去相干分量,利用ESPRIT（旋转不变技术）算法对植被区域的极化干涉SAR（PolInSAR）数据进行反演的结果有较严重偏差。针对这一问题,结合极化干涉相干最优理论及其物理散射机制,引入新的散射矢量——相干最优化散射矢量,提出一种改进的基于ESPRIT的植被高度反算法。最后,利用欧空局（ESA）提供的模拟L波段全极化干涉数据对改进算法的有效性进行验证,试验结果证明改进算法能很大程度地提高反演的精度。 |
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| AbstractList | P237; 由于存在着去相干分量,利用ESPRIT(旋转不变技术)算法对植被区域的极化干涉SAR(PollnSAR)数据进行反演的结果有较严重偏差.针对这一问题,结合极化干涉相干最优理论及其物理散射机制,引入新的散射矢量——相干最优化散射矢量,提出一种改进的基于ESPRIT的植被高度反算法.最后,利用欧空局(ESA)提供的模拟L波段全极化干涉数据对改进算法的有效性进行验证,试验结果证明改进算法能很大程度地提高反演的精度. 由于存在着去相干分量,利用ESPRIT（旋转不变技术）算法对植被区域的极化干涉SAR（PolInSAR）数据进行反演的结果有较严重偏差。针对这一问题,结合极化干涉相干最优理论及其物理散射机制,引入新的散射矢量——相干最优化散射矢量,提出一种改进的基于ESPRIT的植被高度反算法。最后,利用欧空局（ESA）提供的模拟L波段全极化干涉数据对改进算法的有效性进行验证,试验结果证明改进算法能很大程度地提高反演的精度。 |
| Author | 谈璐璐 杨立波 杨汝良 |
| AuthorAffiliation | 中国电子科技集团公司第三十八研究所,安徽合肥230088 北京航天自动控制研究所,北京100854 中国科学院电子学研究所,北京100190 |
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| Author_FL | TAN Lulu YANG Libo YANG Ruliang |
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| DocumentTitleAlternate | Investigation of Tree Height Retrieval with Polarimetric SAR Interferometry Based on ESPRIT Algorithm |
| DocumentTitle_FL | Investigation of Tree Height Retrieval with Polarimetric SAR Interferometry Based on ESPRIT Algorithm |
| EndPage | 300 |
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| Keywords | 树高反演 相干最优 极化干涉SAR ESPRIT |
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| Notes | 11-2089/P Tree height retrieval results making use of polarimetric interferometry SAR data based on ESPRIT algorithm are seriously biased because of the existence of depolarized components.In order to solve this problem,a modified inversion algorithm combining coherence optimization theory and its physical scattering mechanism is presented.Also,a new scattering vector called coherence optimized scattering vector is introduced to help understanding the algorithm.Finally,the proposed and traditional ESPRIT algorithm is applied to simulated L-band PolInSAR data provided by ESA respectively,and the experiment results suggest the validity of the inversion algorithm. polarimetric interferometry SAR; tree height retrieval; ESPRIT; coherence optimization TAN Lulu1,YANG Libo2,YANG Ruliang3 1.No.38 Research Institute,Chinese Electronics Technology Group Corporation,Hefei 230088,China;2.Beijing Aerospace Automatic Control Institute,Beijing 100854,China;3.Institute of Electronics,Chinese Academy of Sciences,Beijing 100190,C |
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| Publisher | 中国电子科技集团公司第三十八研究所,安徽合肥,230088%北京航天自动控制研究所,北京,100854%中国科学院电子学研究所,北京,100190 |
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| SubjectTerms | ESPRIT 极化干涉SAR 树高反演 相干最优 |
| Title | 基于ESPRIT算法的极化干涉SAR植被高度反演研究 |
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