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首页> 外文期刊>Geoscience and Remote Sensing, IEEE Transactions on >Forest Height Estimation by Means of Pol-InSAR Data Inversion: The Role of the Vertical Wavenumber
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Forest Height Estimation by Means of Pol-InSAR Data Inversion: The Role of the Vertical Wavenumber

机译：通过Pol-InSAR数据反演估算森林高度：垂直波数的作用

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摘要

This paper examines the multifaceted effect of the effective spatial baseline, as expressed through the vertical (interferometric) wavenumber, on the inversion of forest height from polarimetric interferometric synthetic aperture radar (Pol-InSAR) data. First, the role of the vertical wavenumber in relating forest height to the interferometric (volume) coherence is introduced. Through the review of the forest height inversion from Pol-InSAR data, the effect of the vertical wavenumber on the inversion performance is evaluated. The selection of optimum with respect to forest height inversion performance, vertical wavenumbers is discussed. The impact of the acquisition geometry and terrain slopes on the vertical wavenumber and their consideration in the inversion methodology is addressed. The individual effects discussed are demonstrated by means of airborne repeat pass Pol-InSAR acquisitions in L- and P-band acquired over different forest conditions, including a boreal, a temperate, and a tropical forest test site. The achieved forest height inversion performance is validated against reference height data derived from airborne LIDAR acquisitions.
机译：本文研究了通过垂直（干涉）波数表示的有效空间基线对极化干涉式合成孔径雷达（Pol-InSAR）数据反演森林高度的多方面影响。首先，介绍了垂直波数在使森林高度与干涉（体积）相干性相关的作用。通过从Pol-InSAR数据回顾林高反演，评估了垂直波数对反演性能的影响。讨论了关于林高反演性能，垂直波数的最佳选择。解决了采集几何形状和地形坡度对垂直波数的影响及其在反演方法中的考虑。通过在不同森林条件（包括寒带，温带和热带森林测试点）上获得的L和P波段的机载重复通过Pol-InSAR采集，证明了所讨论的各个效应。对照从机载LIDAR采集的参考高度数据验证了所获得的森林高度反演性能。

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