elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Impressum | Datenschutz | Kontakt | English
Schriftgröße: [-] Text [+]

Depth-Resolved Backscatter and Differential Interferometric Radar Imaging of Soil Moisture Profiles: Observations and Models of Subsurface Volume Scattering

Zwieback, Simon und Hajnsek, Irena und Edwards-Smith, Alexander und Morrison, Keith (2017) Depth-Resolved Backscatter and Differential Interferometric Radar Imaging of Soil Moisture Profiles: Observations and Models of Subsurface Volume Scattering. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 10 (7), Seiten 3281-3296. IEEE - Institute of Electrical and Electronics Engineers. doi: 10.1109/JSTARS.2017.2671025. ISSN 1939-1404.

Dieses Archiv kann nicht den Volltext zur Verfügung stellen.

Kurzfassung

Microwave observations of soils at L- to X-band are commonly interpreted in terms of surface scattering. However, recent observations of the backscatter and the differential interferometric response indicate that subsurface volume scattering may often be more important than generally thought. The dependence of the subsurface backscatter and interferometric return on soil moisture remains poorly understood as most observations are indirect in that they are confounded with the surface contribution. Here, we aim to elucidate the impact of soil moisture on subsurface volume scattering by employing depth-resolved observations at C-band with a depth resolution of 5–10 cm, thus isolating the subsurface contribution. For the sandy soil analyzed in the experiment, the volumetric subsurface backscattered power is strongly affected by soil moisture (>15 dB): It appears to be governed by the local soil moisture content (local dielectric constant and its spatial variability) and the soil moisture content above (absorption). When the soil moisture changes, the observed interferometric response is consistent with the notion that the subsurface return is mainly governed by the changing optical path through the soil. By modeling and inverting this relation of the interferometric phase to soil moisture, we derive the first spatially continuous estimates of soil moisture profiles based on the clutter. These findings indicate the potential of depth-resolved observations to provide direct, spatially extensive information about the vertical variability of soil moisture, and to inform models of the subsurface response.

elib-URL des Eintrags:https://elib.dlr.de/114060/
Dokumentart:Zeitschriftenbeitrag
Titel:Depth-Resolved Backscatter and Differential Interferometric Radar Imaging of Soil Moisture Profiles: Observations and Models of Subsurface Volume Scattering
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Zwieback, Simoneth zürichNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Hajnsek, IrenaNICHT SPEZIFIZIERTNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Edwards-Smith, AlexanderNICHT SPEZIFIZIERTNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Morrison, Keithcranfield university, ukNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:Juli 2017
Erschienen in:IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Referierte Publikation:Ja
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Ja
In ISI Web of Science:Ja
Band:10
DOI:10.1109/JSTARS.2017.2671025
Seitenbereich:Seiten 3281-3296
Verlag:IEEE - Institute of Electrical and Electronics Engineers
ISSN:1939-1404
Status:veröffentlicht
Stichwörter:Ground penetrating radar, polarimetric synthetic aperture radar, radar clutter, radar imaging, soil moisture, soil properties, tomography
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Erdbeobachtung
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R EO - Erdbeobachtung
DLR - Teilgebiet (Projekt, Vorhaben):R - Sicherheitsrelevante Erdbeobachtung
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Hochfrequenztechnik und Radarsysteme > Radarkonzepte
Hinterlegt von: Radzuweit, Sibylle
Hinterlegt am:15 Sep 2017 09:52
Letzte Änderung:19 Nov 2021 20:29

Nur für Mitarbeiter des Archivs: Kontrollseite des Eintrags

Blättern
Suchen
Hilfe & Kontakt
Informationen
electronic library verwendet EPrints 3.3.12
Gestaltung Webseite und Datenbank: Copyright © Deutsches Zentrum für Luft- und Raumfahrt (DLR). Alle Rechte vorbehalten.