Title :
Investigation on the validity region of analytical models simulating scattering from vegetation elements
Author :
Montomoli, Francesco ; Macelloni, Giovanni ; Brogioni, Marco ; Toccafondi, Alberto
Author_Institution :
IFAC, Florence, Italy
Abstract :
Electromagnetic models, able to simulate scattering from vegetation, are widely used in the remote sensing community in order to interpret space-borne or air-borne SAR data and to develop algorithms capable to derive from them bio-physical quantities (i.e. biomass, tree height, etc.). Most of the models consider the vegetation as an ensemble of simple elements (cylinders, discs) for representing the different parts which compose the plant (e.g. trunk, branches, leaves, etc.). Specific analytical models able to describe the scattering form this elements were developed in the past but theirs validity ranges in terms of frequency or elements dimensions were not yet fully investigated. A comparison between analytical models and a numerical full wave model for cylinders, elliptical and spherical discs at different frequencies in the 1.5 - 20 GHz range is presented here.
Keywords :
remote sensing by radar; vegetation; air-borne SAR data; analytical models; bio-physical quantities; cylinder disc; electromagnetic models; element dimension; elliptical disc; frequency dimension; remote sensing community; scattering simulation; space-borne SAR data; spherical disc; validity region; vegetation elements; Analytical models; Backscatter; Electromagnetic scattering; Finite element methods; Numerical models; Vegetation mapping; numerical model; scattering model; vegetation;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2012 IEEE International
Conference_Location :
Munich
Print_ISBN :
978-1-4673-1160-1
Electronic_ISBN :
2153-6996
DOI :
10.1109/IGARSS.2012.6352448