Dielectric Constant Modelling with Soil–Air Composition and Its Effect on Sar Radar Signal Backscattered over Soil Surface
The objective of this paper is to present the contribution of a new dielectric constant characterisation for the modelling of radar backscattering behaviour. Our analysis is based on a large number of radar measurements acquired during different experimental campaigns (Orgeval’94, Pays de CauxÃ...
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2008-11-01
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Online Access: | http://www.mdpi.com/1424-8220/8/11/6810/ |
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doaj-e9d1f23b4c8a4a30a6529b4bde03c4152020-11-25T02:16:12ZengMDPI AGSensors1424-82202008-11-018116810682410.3390/s8116810Dielectric Constant Modelling with Soil–Air Composition and Its Effect on Sar Radar Signal Backscattered over Soil SurfaceMehrez ZribiNicolas BaghdadiAurélie Le MorvanThe objective of this paper is to present the contribution of a new dielectric constant characterisation for the modelling of radar backscattering behaviour. Our analysis is based on a large number of radar measurements acquired during different experimental campaigns (Orgeval’94, Pays de Caux’98, 99). We propose a dielectric constant model, based on the combination of contributions from both soil and air fractions. This modelling clearly reveals the joint influence of the air and soil phases, in backscattering measurements over rough surfaces with large clods. A relationship is established between the soil fraction and soil roughness, using the Integral Equation Model (IEM), fitted to real radar data. Finally, the influence of the air fraction on the linear relationship between moisture and the backscattered radar signal is discussed.http://www.mdpi.com/1424-8220/8/11/6810/dielectric constantradarmoisturemodelling |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Mehrez Zribi Nicolas Baghdadi Aurélie Le Morvan |
spellingShingle |
Mehrez Zribi Nicolas Baghdadi Aurélie Le Morvan Dielectric Constant Modelling with Soil–Air Composition and Its Effect on Sar Radar Signal Backscattered over Soil Surface Sensors dielectric constant radar moisture modelling |
author_facet |
Mehrez Zribi Nicolas Baghdadi Aurélie Le Morvan |
author_sort |
Mehrez Zribi |
title |
Dielectric Constant Modelling with Soil–Air Composition and Its Effect on Sar Radar Signal Backscattered over Soil Surface |
title_short |
Dielectric Constant Modelling with Soil–Air Composition and Its Effect on Sar Radar Signal Backscattered over Soil Surface |
title_full |
Dielectric Constant Modelling with Soil–Air Composition and Its Effect on Sar Radar Signal Backscattered over Soil Surface |
title_fullStr |
Dielectric Constant Modelling with Soil–Air Composition and Its Effect on Sar Radar Signal Backscattered over Soil Surface |
title_full_unstemmed |
Dielectric Constant Modelling with Soil–Air Composition and Its Effect on Sar Radar Signal Backscattered over Soil Surface |
title_sort |
dielectric constant modelling with soilã¢â€â“air composition and its effect on sar radar signal backscattered over soil surface |
publisher |
MDPI AG |
series |
Sensors |
issn |
1424-8220 |
publishDate |
2008-11-01 |
description |
The objective of this paper is to present the contribution of a new dielectric constant characterisation for the modelling of radar backscattering behaviour. Our analysis is based on a large number of radar measurements acquired during different experimental campaigns (Orgeval’94, Pays de Caux’98, 99). We propose a dielectric constant model, based on the combination of contributions from both soil and air fractions. This modelling clearly reveals the joint influence of the air and soil phases, in backscattering measurements over rough surfaces with large clods. A relationship is established between the soil fraction and soil roughness, using the Integral Equation Model (IEM), fitted to real radar data. Finally, the influence of the air fraction on the linear relationship between moisture and the backscattered radar signal is discussed. |
topic |
dielectric constant radar moisture modelling |
url |
http://www.mdpi.com/1424-8220/8/11/6810/ |
work_keys_str_mv |
AT mehrezzribi dielectricconstantmodellingwithsoilaaaaircompositionanditseffectonsarradarsignalbackscatteredoversoilsurface AT nicolasbaghdadi dielectricconstantmodellingwithsoilaaaaircompositionanditseffectonsarradarsignalbackscatteredoversoilsurface AT auraƒalielemorvan dielectricconstantmodellingwithsoilaaaaircompositionanditseffectonsarradarsignalbackscatteredoversoilsurface |
_version_ |
1724892025239633920 |