| 基于Freeman分解的植被参数反演新方法 |
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| 引用本文： | 李廷伟,黄海风,梁甸农,朱炬波.基于Freeman分解的植被参数反演新方法[J].电子与信息学报,2011,33(4):781-786. |
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| 作者姓名： | 李廷伟 黄海风 梁甸农 朱炬波 |
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| 作者单位： | 国防科技大学电子科学与工程学院; |
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| 基金项目： | 国家自然科学基金(60902092,61002031)资助课题 |
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| 摘 要： | 基于极化Freeman分解的极化协方差矩阵参数，极化干涉SAR互协方差矩阵可简化建模为植被高度、消光系数和地面干涉相位的函数。基于此，该文建立了以极化干涉SAR互协方差矩阵估算值与互协方差矩阵观测值之差为目标函数、以3个植被参数为未知量的优化模型，提出了基于Freeman分解的植被参数反演新方法。该方法避免了三阶段植被参数估计方法所面临的体相关系数确定问题，提供了一种独立于三阶段植被参数估计的新思路。仿真结果验证了新方法的有效性。
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| 关 键 词： | 极化SAR干涉 植被参数反演 散射机理 Freeman分解 |
| 收稿时间： | 2010-07-19 |
A Novel Vegetation Parameters Inversion Method Based on the Freeman Decomposition |
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| Li Ting-wei,Huang Hai-feng,Liang Dian-nong,Zhu Ju-bo.A Novel Vegetation Parameters Inversion Method Based on the Freeman Decomposition[J].Journal of Electronics & Information Technology,2011,33(4):781-786. |
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| Authors: | Li Ting-wei Huang Hai-feng Liang Dian-nong Zhu Ju-bo |
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| Affiliation: | Li Ting-wei Huang Hai-feng Liang Dian-nong Zhu Ju-bo (School of Electronic Science and Engineering,National University of Defense Technology,Changsha 410073,China) |
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| Abstract: | Based on the estimated polarimetric coherence matrices of the three different scattering mechanisms by Freeman decomposition,the polarimetric interferometric cross-coherence matrices could be simply modeled as a function of the vegetation height,the extinction coefficient and the topographic phase.Based on this model,a new optimization model is established.The target function of this new optimization model is the difference between the computed results of polarimetric interferometric cross-coherence matrice... |
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| Keywords: | Polarimetric SAR interferometry Vegetation parameters inversion Scattering mechanism Freeman decomposition |
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