MODELING THE EFFECT OF SURFACE ROUGHNESS ON THE BACK-SCATTERING COEFFICIENT AND EMISSIVITY OF A SOIL-LITTER MEDIUM USING A NUMERICAL MODEL

被引：0

作者：

Lawrence, H. ^{[1
,2
]}

Demontoux, F. ^{[1
]}

Wigneron, J-P ^{[2
]}

Kerr, Y. ^{[3
]}

Wu, T-D ^{[4
]}

Borderies, P. ^{[5
]}

Paillou, P. ^{[1
,6
]}

Chen, L. ^{[7
]}

Shi, J-C ^{[7
]}

机构：

[1] Univ Bordeaux 1, Lab IMS, UMR 5218, MCM Dept, F-33405 Talence, France

[2] INRA, EPHYSE, Villenave Dornon, France

[3] Ctr Etud Spatiales Biosphere CESBIO, Toulouse, France

[4] Natl Taiwan Ocean Univ, Dept Elect Engn, Keelung, Taiwan

[5] Off Natl Etud & Rech Aerosp Lab, Toulouse, France

[6] UMR 5804, Lab Astrophys Bordeaux LAB, Floirac, France

[7] Univ Calif Santa Barbara, Inst Computat Earth Syst Sci, Santa Barbara, CA 93106 USA

来源：

2009 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM, VOLS 1-5 | 2009年

关键词：

rough surfaces; microwave radiometry; 3D numerical model; SMOS mission; SCATTERING; BEHAVIOR;

D O I：

10.1109/IGARSS.2009.5417805

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

In the context of the SMOS mission, a new numerical method based on the finite element method is presented which can be used to model the radiometric L-band emission of soil and litter layers in forests. Many different characteristics of these layers that affect the soil-litter emission can be incorporated into the model, including surface roughness, inclusions and volume effects. Soil moisture is incorporated into the model as a function of the dielectric permittivity constant. The model is validated for a single dielectric layer with a surface roughness of Gaussian autocorrelation function by comparing results of the backscattering coefficient with those calculated by the 2D method of moments. Good general agreement is obtained between these results. An emissivity calculation for a single layer rough surface is also presented and compared with the emissivity of a flat layer.

引用

页码：1816 / +

页数：2

共 4 条

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