REMOTE SENSING OF SOIL MOISTURE FOR VEGETATION/FORESTS WITH LARGE VWC USING NMM3D FULL WAVE SIMULATIONS

被引：0
|
作者：
Huang, Huanting [1 ]
Tsang, Leung [1 ]
Colliander, Andreas [2 ]
Yueh, Simon [2 ]
机构：
[1] Univ Michigan, Dept Elect Engn & Comp Sci, Radiat Lab, Ann Arbor, MI 48109 USA
[2] CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA
来源：
2019 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS 2019) | 2019年
基金：
美国国家航空航天局;
关键词：
Remote sensing of soil moisture; NMM3D full wave simulations; Foldy-Lax multiple scattering equation; transmission; SCATTERING; LAYER;
D O I：
10.1109/igarss.2019.8900643
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
The transmission through vegetation/forest canopy is important for remote sensing of soil moisture. The commonly used vegetation models are distorted Born Approximation (DBA) and Radiative Transfer Equation (RTE). We recently developed Numerical Maxwell Model of 3D (NMM3D) full wave simulations of vegetation/forests. The results of NMM3D show much larger transmission than that of RTE/DBA. A much larger transmission of NMM3D means microwave emission from soil can reach the radiometer, which is different from the conclusion for microwave remote sensing of soil moisture based on RTE and DBA. In this paper, we implement NMM3D based on the scattered field formulation of Foldy-Lax multiple scattering equations (FL). The novelty of this method is that the 3D cylindrical vector wave expansions are used in FL. The correctness of the method is verified. We implement the method on parallel computation using a large number of tall cylinders.
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页码：6979 / 6982
页数：4
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