Title :
A modified IEM model for: scattering from soil surfaces with application to soil moisture sensing
Author :
Fung, A.K. ; Dawson, M.S. ; Chen, K.S. ; Hsu, PLY ; Engman, E.T. ; Neil, P. O O ; Wang, J.
Author_Institution :
Dept. of Electr. Eng., Texas Univ., Arlington, TX, USA
Abstract :
The IEM surface scattering model is generalized to include the possible existence of a dielectric profile such as observed in drying conditions after rain. It is shown that for such a case, the generalized signal model including this improvement in reflectivity may give better agreement with backscatter measurements for some data sets. Hence, such a model may be applied either directly for estimating soil moisture or used to generate training patterns for statistical estimators
Keywords :
backscatter; electromagnetic wave scattering; geophysical techniques; hydrological techniques; moisture measurement; radar cross-sections; radar theory; remote sensing by radar; soil; backscatter; dielectric profile; drying conditions; generalized signal model; hydrology; measurement technique; modified IEM model; radar remote sensing; radar scattering; radiowave scattering; rough surface; soil moisture; soil surface; surface scattering model; Backscatter; Dielectrics; Radar scattering; Rain; Reflectivity; Rough surfaces; Soil measurements; Soil moisture; Surface roughness; Volume measurement;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 1996. IGARSS '96. 'Remote Sensing for a Sustainable Future.', International
Conference_Location :
Lincoln, NE
Print_ISBN :
0-7803-3068-4
DOI :
10.1109/IGARSS.1996.516642
