Ecoinformatics and Soil-Plant Formations - New Ecoinformatics Tools in Environmental Science: Applications and Decision-making - page 708

including initial state, boundary conditions, etc. The main step of the simulation
experiment is a quality criteria de nition in order to achieve the purpose of the

experiment. Various examples of solution of such environmental problem, with the
use of the GIMS-based approach are given in this topic.

8.8 Microwave Model of Vegetation Cover

8.8.1 Two-Level Model of Vegetation Cover

The atmosphere-vegetation-soil system (AVSS) is commonly considered in
Fig. 8.29 . The microwave emission of the AVSS is formed by a combination of
absorption and diffraction processes within the media and by repeated re

ection
upon their boundaries. Microwave emission models (MEMs) have been thoroughly
studied in attempts to derive possible AVSS con

fl

gurations by many authors
(Ferrazzoli and Guerriero 1996; Phillips et al. 2009; Shutko 1997; Shutko et al.
2007; Krapivin et al. 2006b; Shutko and Krapivin 2011). The AVSS emissivity
ability is usually described as

2

e ¼ 1 jj ð 8 : 12 Þ

where

1 = 2

R 21 exp 2i ½ R 32

R 21 R 32 þ exp 2i

v 2 p

k

e 2 sin 2 R ¼

; v ¼ v 1 i

v 2 ¼ h ;

½ v h

Fig. 8.29 Block-diagram of the model-based calculation of the shielding in uence of the

vegetation cover within the problem of microwave monitoring (Krapivin et al. 2006b)

fl