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首页> 外文期刊>IEEE Transactions on Geoscience and Remote Sensing >A Study on Oil Palm Remote Sensing at L-Band With Dense Medium Microwave Backscattering Model
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A Study on Oil Palm Remote Sensing at L-Band With Dense Medium Microwave Backscattering Model

机译：利用重介质微波反向散射模型研究L波段油棕的遥感

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Studies on the potential of using synthetic aperture radar (SAR) imaging data for remote sensing in oil palm growth needs to be done in depth. In this paper, we utilized a scattering model for oil palm to study and understand how L-band microwave interacts with the structure of the oil palm. The model is developed based on the radiative transfer theory and solved iteratively up to the second order. The knowledge obtained can likely be used to interpret the backscattering behavior of oil palm with respect to growth. The oil palm is modeled as a multilayer dense medium with leaflets as elliptical disk while the trunk and fronds as cylinders. The model takes into consideration of the close spacing effects of scattering in a dense medium with the use of phase correction theory. Furthermore, near-field interactions between closely spaced scatterers are also considered via the Fresnel phase and amplitude corrections. Ground truth data were measured from the oil palm fields and are used as input parameters in the model. Five different age groups of oil palm were chosen and their backscatter coefficient simulated at L-band frequency. L-band SAR data acquired were compared with the simulated results, and it was found that there was a good agreement between the simulated results and measured data. For further understanding, the model also simulated the breakdown of backscatter contribution by various components of oil palm which allows a better understanding of the interaction between microwave backscatter with specific components.
机译：需要深入研究使用合成孔径雷达（SAR）成像数据进行油棕树生长遥感的潜力。在本文中，我们使用了油棕的散射模型来研究和了解L波段微波如何与油棕的结构相互作用。该模型是基于辐射传递理论开发的，并且迭代求解直至二阶。获得的知识很可能可以用来解释油棕相对于生长的反向散射行为。油棕被建模为多层密集介质，小叶为椭圆盘，而树干和叶状为圆柱体。该模型使用相位校正理论考虑了在稠密介质中散射的近距离效应。此外，还可以通过菲涅耳相位和幅度校正来考虑紧密分布的散射体之间的近场相互作用。地面真实数据是从油棕田中测得的，并用作模型中的输入参数。选择了五种不同年龄的油棕，并以L波段频率模拟了它们的反向散射系数。将获得的L波段SAR数据与模拟结果进行比较，发现模拟结果与实测数据之间有很好的一致性。为了进一步理解，该模型还模拟了油棕各成分对反向散射贡献的分解，从而可以更好地了解微波反向散射与特定组分之间的相互作用。

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