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Potential of Estimating Soil Moisture under Vegetation Cover by means of PolSAR

Hajnsek, Irena and Jagdhuber, Thomas and Schön, Helmut and Papathanassiou, Kostas (2009) Potential of Estimating Soil Moisture under Vegetation Cover by means of PolSAR. IEEE Transactions on Geoscience and Remote Sensing, 47 (2), pp. 442-454. IEEE TGRS. DOI: 10.1109/TGRS.2008.2009642.

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Official URL: http://www.ieee.org

Abstract

The potential of using polarimetric SAR acquisitions for the estimation of volumetric soil moisture under agricultural vegetation is investigated. Soil moisture estimation by means of SAR is a topic that is intensively investigated but yet not solved satisfactorily. The key problem is the presence of vegetation cover which biases soil moisture estimates. In this paper we discuss the problem of soil moisture estimation in the presence of agricultural vegetation by means of L-band polarimetric SAR images. SAR polarimetry allows the decomposition of the scattering signature into canonical scattering components and their quantification. We discuss simple canonical models for surface, dihedral and vegetation scattering and use them to model and interpret scattering processes. The performance and modifications of the individual scattering components are discussed. The obtained surface and dihedral components are then used to retrieve surface soil moisture. The investigations cover for the first time the whole vegetation growing period for three crop types using SAR data and ground measurements acquired in the frame of the AgriSAR campaign.

Document Type:Article
Additional Information:�©2009 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:Potential of Estimating Soil Moisture under Vegetation Cover by means of PolSAR
Authors:
AuthorsInstitution or Email of Authors
Hajnsek, IrenaUNSPECIFIED
Jagdhuber, ThomasUNSPECIFIED
Schön, HelmutUNSPECIFIED
Papathanassiou, KostasUNSPECIFIED
Date:February 2009
Journal or Publication Title:IEEE Transactions on Geoscience and Remote Sensing
Refereed publication:Yes
In Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:47
DOI:10.1109/TGRS.2008.2009642
Page Range:pp. 442-454
Publisher:IEEE TGRS
Status:Published
Keywords:surface soil moisture estimation, polarimetric SAR, model based decomposition, scattering mechanisms
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W - Vorhaben Prosmart, Smart-SAR (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > Radar Concepts
Microwaves and Radar Institute
Deposited By: Dr.rer.nat. Irena Hajnsek
Deposited On:23 Mar 2009
Last Modified:12 Dec 2013 20:35

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