Caracterisation Electromagnetique De Materiaux Geologiques En Vue Du Suivi De L'Humidite Des Sols Par Radiometrie Micro-Ondes

TL;DR

This paper investigates the dielectric properties of soil and litter to improve soil moisture monitoring via radiometry, aiming to enhance the SMOS mission's data interpretation.

Contribution

It provides new dielectric property measurements of soil and litter and develops an analytical multilayer model to incorporate these effects into soil moisture estimation.

Findings

Dielectric properties of litter and soil characterized.

Multilayer model developed for soil-litter system.

Potential to improve moisture retrieval algorithms.

Abstract

The work which we present takes place within the framework of mission SMOS of the ESA which will consist to send a radiometer (1.4 GHz) in space. The goal of the research which we propose is the improvement of the comprehension of the effects of structures composed of soil and litter. The effects of the litter and heterogeneities of the ground are probably important but still ignored. The objective of this work was to study the dielectric properties of a type of litter and ground in order to integrate these values into an analytical multi layers model of soil. The objective is to characterize the effects of this layer on the total multi layer system. This will make possible to lead to a simple analytical formulation of a model of litter which can be integrated into the calculation algorithm of SMOS in order to collect information on moisture starting from measurements of emissivity