Polarimetric SAR interferometry
Polarimetric SAR interferometry
复制标题
偏振SAR干涉测量
DOI：
10.1109/36.718859
复制
发表时间：
1998-09-01
影响因子：
8.2
通讯作者：
Papathanassiou, KP
中科院分区：
文献类型：
--
作者：
Cloude, SR;Papathanassiou, KP
本文研究了偏振测量在合成孔径雷达（SAR）干涉测量中的作用，首先提出了矢量干涉测量的一般公式，其中包括作为特殊情况的常规标量干涉测量。然后，我们展示了如何将偏振基变换引入SAR干涉测量，并应用于在所有可能的偏振态线性组合之间形成干涉图。这使我们能够揭示干涉相干的强偏振依赖性。然后，我们解决了涉及相干性最大化的相干性优化问题，并制定了一种新的极化SAR干涉相干分解方法，允许不同散射机制的有效相位中心分离。以高架林冠的简化随机散射模型为例，验证了算法的有效性。通过这种方式，我们证明了波偏振对SAR干涉图的物理解释的重要性。本文利用1994年10月8-9日在俄罗斯西伯利亚东南部布里亚特（Buriatia）的Selenga三角洲地区采集的全偏振干涉穿梭成像雷达(SIR)-C/X-SAR数据的评估结果，探讨了偏振SAR干涉测量的潜力。
In this paper, we examine the role of polarimetry in synthetic aperture radar (SAR) interferometry, We first propose a general formulation for vector wale interferometry that includes conventional scalar interferometry as a special case. Then, we show how polarimetric basis transformations can be introduced into SAR interferometry and applied to form interferograms between all possible linear combinations of polarization states. This allows us to reveal the strong polarization dependency of the interferometric coherence. We then solve the coherence optimization problem involving maximization of interferometric coherence and formulate a new coherent decomposition for polarimetric SAR interferometry that allows the separation of the effective phase centers of different scattering mechanisms. A simplified stochastic scattering model for an elevated forest canopy is introduced to demonstrate the effectiveness of the proposed algorithms. In this way, we demonstrate the importance of wave polarization for the physical interpretation of SAR interferograms. We investigate the potential of polarimetric SAR interferometry using results from the evaluation of fully polarimetric interferometric shuttle imaging radar (SIR)-C/X-SAR data collected during October 8-9, 1994, over the SE Baikal Lake Selenga delta region of Buriatia, Southeast Siberia, Russia.