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首页> 外文期刊>Geoscience and Remote Sensing, IEEE Transactions on >Single and Multipolarimetric SAR Tomography of Forested Areas: A Parametric Approach
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Single and Multipolarimetric SAR Tomography of Forested Areas: A Parametric Approach

机译：林区的单极化和多极化SAR层析成像：一种参数方法

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摘要

In this paper, a technique is described for the tomographic characterization of forested areas through multiple synthetic aperture radar (SAR) observations, based on either single or multipolarimetric acquisitions. This technique is based on the idea of characterizing the Fourier spectrum of the multibaseline data as being constituted by two effective scattering centers displaced along the vertical direction, plus the associated decorrelation terms. As a result, SAR tomography will be formulated as the problem of detecting the number of scattering centers within the resolution cell, estimating the parameters that describe their spatial structure, and evaluating the associated backscattered powers. Parameter estimation is carried out through the covariance matching estimation technique, which provides an asymptotically optimal solution. The results of an experiment performed on a real P-band multibaseline fully polarimetric data set relative to the forested site of Remningstorp, Sweden, are reported.
机译：在本文中，介绍了一种基于单极化或多极化采集技术，通过多次合成孔径雷达（SAR）观测对林区进行层析成像的技术。该技术基于将多基线数据的傅里叶光谱表征为由沿垂直方向位移的两个有效散射中心以及相关的去相关项构成的思想。结果，SAR层析成像将被公式化为检测分辨率单元内散射中心的数量，估计描述其空间结构的参数以及评估相关的反向散射功率的问题。参数估计是通过协方差匹配估计技术进行的，该技术提供了渐近最优解。报告了在相对于瑞典Remningstorp林区的真实P波段多基线全极化数据集上进行的实验结果。

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