Title :
A new dielectric model for vegetation in frozen environment—Part I: Modeling section
Author :
Xiaokang Kou ; Linna Chai ; Lingmei Jiang ; Shaojie Zhao ; Fengmin Wu
Author_Institution :
State Key Lab. of Remote Sensing Sci., Beijing Normal Univ., Beijing, China
Abstract :
Dielectric constant is an important parameter in microwave remote sensing. The microwave scattering/radiation signal of vegetation is closely related to its dielectric constant. Many related models have been established by now. However, most of them can only be used in room temperature. Therefore, it brings errors in the research of vegetation in frozen environment. In this study, a new dielectric model, which can be used at frequencies ranged from 3GHz to 40GHz under temperatures between -20°C and -4°C, has been established. It was developed based on Debye-Cole dual-dispersion model. The validation shows it has an acceptable precision.
Keywords :
electromagnetic wave scattering; permittivity; remote sensing; vegetation; Debye-Cole dual-dispersion model; dielectric constant; dielectric model; frequency 3 GHz to 40 GHz; frozen environment; microwave radiation signal; microwave remote sensing; microwave scattering signal; modeling section; room temperature; temperature -20 degC to -4 degC; temperature 293 K to 298 K; vegetation; Dielectric constant; Dielectric measurement; Equations; Mathematical model; Temperature measurement; Vegetation mapping; Dielectric constant model; frozen environment; microwave; vegetation;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2013 IEEE International
Conference_Location :
Melbourne, VIC
Print_ISBN :
978-1-4799-1114-1
DOI :
10.1109/IGARSS.2013.6723720
