Modified Scattering Decomposition for Soil Moisture Estimation from Polarimetric X-Band Data
Martone, Michele and Jagdhuber, Thomas and Hajnsek, Irena and Iodice, Antonio (2010) Modified Scattering Decomposition for Soil Moisture Estimation from Polarimetric X-Band Data. In: Proceedings of IEEE GOLD 2010. IEEE. IEEE GOLD Remote Sensing Conference, 2010-04-29 - 2010-04-30 , Livorno, Italy.
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Soil moisture content represents a key observable in order to model, describe and predict many ecological processes. In the last decades, theoretical and empirical inversion algorithms for soil moisture estimation using PolSAR data at L- and P-band have been intensively investigated, and, meanwhile, there exist innovative techniques for the quantitative retrieval of dielectric constant of the soil . In this project work, the potential of estimating soil moisture from fully polarimetric X-band SAR data is investigated for the first time. Due to the short wavelength, the Physical Optics model has been chosen for the scattering process representation  and a model-based decomposition approach has been used to exploit the polarimetric observable space. For appropriate modelling of the very strong cross-polarization contribution of X-band waves, which are scattered by even very small objects, corrections of the volume scattering contribution were implemented. In order to improve the retrieval of the moisture content, the developed polarimetric decomposition has been further modified by means of an eigen-analysis of the coherency matrix. The SAR data were acquired by the German satellite TerraSAR-X over the agricultural area of Wallerfing (Lower Bavaria, Germany) in April/May 2009. A validation of the proposed approaches for a quality assessment has been performed by comparing the estimated moisture values with in situ measurements collected in collaboration with the Ludwig-Maximilians-Universität (LMU) München.
|Document Type:||Conference or Workshop Item (Speech, Paper)|
|Additional Information:||©2010 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE|
|Title:||Modified Scattering Decomposition for Soil Moisture Estimation from Polarimetric X-Band Data|
|Date:||29 April 2010|
|Journal or Publication Title:||Proceedings of IEEE GOLD 2010|
|In ISI Web of Science:||No|
|Keywords:||PolSAR, soil moisture inversion, Physical Optics, TerraSAR-X|
|Event Title:||IEEE GOLD Remote Sensing Conference|
|Event Location:||Livorno, Italy|
|Event Type:||national Conference|
|Event Dates:||2010-04-29 - 2010-04-30|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||Space|
|HGF - Program Themes:||W EO - Erdbeobachtung|
|DLR - Research area:||Space|
|DLR - Program:||W EO - Erdbeobachtung|
|DLR - Research theme (Project):||W - Vorhaben hochauflösende Fernerkundungsverfahreen (old)|
|Institutes and Institutions:||Microwaves and Radar Institute > Radar Concepts|
Microwaves and Radar Institute
|Deposited By:||Michele Martone|
|Deposited On:||26 Mar 2010 17:33|
|Last Modified:||22 Dec 2010 10:27|
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