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UAVSAR Tomography for Vertical Profile Generation of Tropical Forest of Mondah National Park, Gabon

机译:Uvsar断层术用于垂直轮廓的Mondah国家公园热带森林,加蓬

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Polarimetric synthetic‐aperture radar (SAR) remote sensing has been widely used for structural and biophysical parameters retrieval of forest vegetation. It has been found that the combination of polarimetric properties and interferometric characteristics of SAR remote sensing provides the capacity to retrieve forest height. The prime objective of this research was to investigate the potential of Polarimetric Synthetic Aperture Radar Tomography (PolTomSAR) for the forested and river region of Mondah National Park, Gabon. SAR tomography is an improved method for acquiring the height of geographical features. UAVSAR L‐band fully polarimetric multibaseline data have been used in this research (1.275?GHz). SAR data and ground data over the area have been collected in the year 2016. With the superresolution‐based Capon algorithm, multiple scatterers located at a different vertical position in the same azimuth range cell has been resolved and reconstructed. This work provides a framework for Capon‐based tomographic processing of multibaseline UAVSAR data for vertical profile retrieval of forest vegetation. The height profile of the forest patch having sparse, as well as dense vegetation, were retrieved. The vertical profile for a single azimuthal bin was obtained in range direction. The tomographic profile obtained was cross‐checked with the field‐measured forest height for the 16 locations in Mondah National Park, Gabon. To check the accuracy of the applied method, the statistical method of R2 and root‐mean‐square error (RMSE) is employed. The obtained RMSE of the result is 4.21?m and R2 is 0.92. The obtained results were concluded to find the potential of the Capon algorithm for the tomographic reconstruction of UAVSAR data.
机译:Polarimetric合成孔径雷达(SAR)遥感已广泛用于森林植被检索的结构和生物物理参数。已经发现,SAR遥感的极化性质和干涉特性的组合提供了检索林高的能力。本研究的主要目标是调查蒙大山国家公园森林和河流地区的偏振综合孔径雷达断层扫描(Poltomsar)的潜力。 SAR断层扫描是获取地理特征高度的改进方法。 UAVSAR L波段完全偏振多元化数据已在本研究中使用(1.275?GHz)。该地区的SAR数据和地面数据已在2016年中收集。通过基于超级化的CAPON算法,已经解决并重建了位于同一方位角单元格中的不同垂直位置的多个散射体。这项工作为CAPON的断层处理提供了一种基于CAPON的断层处理,用于森林植被的垂直轮廓检索的多元联盟UVSAR数据。检索森林泥浆的高度曲线,以及浓郁的植被。单方位角箱的垂直轮廓在范围方向上获得。获得的断层概况与Mondah国家公园的16个地点的现场测量的森林高度进行了交叉检查。为了检查所应用方法的准确性,采用R2和均方根误差(RMSE)的统计方法。得到的RMSE的结果为4.21μm,r2为0.92。获得了所获得的结果,以找到用于UVSAR数据断层重建的CAPON算法的潜力。

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