Soil surface backscatter model using FDTD method

Author

Zhuang, Yan ; Colpitts, Bruce G.

Author_Institution

Dept. of Electr. & Comput. Eng., New Brunswick Univ., Fredericton, NB, Canada

Volume

2

fYear

1998

fDate

24-28 May 1998

Firstpage

719

Abstract

The effect of inhomogeneous soil properties, such as wetting and drying fronts, on backscattering behaviour is examined. A FDTD model is developed to simulate the electromagnetic backscattering by a random three-dimensional soil surface excited by a sinusoidal plane wave of 5.3 GHz. The total-field/scattered-field formulation is used along with Berenger´s (1994) perfectly matched layer (PML). A number of three-dimensional random surfaces with known surface statistical properties are generated and computed to obtain the value of the backscattering coefficient. The FDTD results are compared with existing theoretical and empirical models

Keywords

backscatter; electromagnetic wave scattering; finite difference time-domain analysis; moisture; random media; remote sensing by radar; soil; 5.3 GHz; FDTD method; drying fronts; electromagnetic backscattering; inhomogeneous soil properties; perfectly matched layer; random three-dimensional soil surface; scattered-field formulation; sinusoidal plane wave; soil surface backscatter model; surface statistical properties; three-dimensional random surfaces; total-field formulation; wetting front; Backscatter; Computational modeling; Electromagnetic modeling; Electromagnetic scattering; Finite difference methods; Perfectly matched layers; Random number generation; Soil properties; Surface waves; Time domain analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical and Computer Engineering, 1998. IEEE Canadian Conference on

Conference_Location

Waterloo, Ont.

ISSN

0840-7789

Print_ISBN

0-7803-4314-X

Type

conf

DOI

10.1109/CCECE.1998.685598

Filename

685598