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首页> 外文期刊>IEEE Transactions on Geoscience and Remote Sensing >Passive microwave remote sensing of forests: a model investigation
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Passive microwave remote sensing of forests: a model investigation

机译：森林被动微波遥感：模型研究

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摘要

A model, based on the radiative transfer theory and the matrix doubling algorithm, is described and used to compute the emissivity e of forests. According to model simulations, the L-band emissivity trend versus forest biomass is more gradual than that of the backscatter coefficient. This gradual behavior is observed, in absence of leaves, also at C- and X-bands, while leaves anticipate saturation and make e higher in coniferous forests and lower in deciduous forests. Model results are successfully validated by some available experimental data. Operational aspects, concerning the potential of airborne and spaceborne radiometers in identifying forest type and estimating biomass, are discussed.
机译：描述了一种基于辐射传递理论和矩阵加倍算法的模型，并将其用于计算森林的发射率e。根据模型仿真，与森林生物量相比，L波段的发射率趋势要比后向散射系数的梯度更渐进。在没有叶子的情况下，也可以在C和X波段观察到这种渐进行为，而叶子在针叶林中预计达到饱和并使其较高，而在落叶林中则较低。模型结果已通过一些可用的实验数据成功验证。讨论了有关机载和星载辐射计在识别森林类型和估算生物量方面的潜力的操作方面。

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