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Surface Parameter Estimation using bistatic polarimetric X-band Measurements

Ben Khadhra, Kais und Börner, Thomas und Hounam, David und Chandra, Madhukar (2012) Surface Parameter Estimation using bistatic polarimetric X-band Measurements. Progress In Electromagnetics Research B, 39, Seiten 197-223. EMW Publishing. ISSN 1937-6472

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Offizielle URL: http://www.jpier.org/PIERB/pier.php?paper=12020112


The main purpose of this paper is to separately estimate the important surface parameters (soil moisture and roughness) by using full polarimetric bistatic measurements. The results provide a basis for new satellite application of future bistatic measurement systems such as the TanDEM-X satellite mission. Initially, bistatic X-band measurements, which have been recorded in the Bistatic Measurement Facility (BMF) at the DLR Oberpfaffenhofen, Microwaves and Radar Institute, will be presented. The bistatic measurement sets are composed of soils with different well-known statistical roughness scales and different moistures. The BMF has been calibrated using the Isolated Antenna Calibration Technique (IACT). The validation of the calibration was achieved by measuring the reflectivity of fresh water. In the second part, the assessment of the surface parameters (soil moisture and surface roughness) using the well calibrated data introduced in the former related part, will be detailed. The validation of the specular algorithm by estimating the soil moisture of two surfaces with different roughness scales will be reported. Additionally, a new technique using the coherent term of the Integral Equation Method (IEM) to estimate the soil roughness will be presented, as well as the sensitivity of phase and reflectivity with regard to moisture variation and therefore the penetration depth was evaluated. Current results demonstrate a non-linear relationship between the signal phase and the soil moisture, as expected, confirming the possibility of using DInSAR to measure variations in soil moisture.

Titel:Surface Parameter Estimation using bistatic polarimetric X-band Measurements
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iD
Ben Khadhra, KaisUniversity of Waterloo, CanadaNICHT SPEZIFIZIERT
Chandra, MadhukarTechnische Universität ChemnitzNICHT SPEZIFIZIERT
Datum:März 2012
Erschienen in:Progress In Electromagnetics Research B
Referierte Publikation:Ja
In Open Access:Ja
In ISI Web of Science:Nein
Seitenbereich:Seiten 197-223
HerausgeberInstitution und/oder E-Mail-Adresse der Herausgeber
Chew, Weng ChoUniversity of Hong Kong
Verlag:EMW Publishing
Name der Reihe:Progress In Electromagnetics Research
Stichwörter:Soil moisture, soil roughness, radar, SAR, polarimetry, bistatic, anechoic chamber, parameter extraction
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 - Vorhaben SAR-Expert-Support-Lab
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Hochfrequenztechnik und Radarsysteme > Radarkonzepte
Institut für Hochfrequenztechnik und Radarsysteme
Hinterlegt von: Börner, Dr.rer.nat. Thomas
Hinterlegt am:23 Mär 2012 15:47
Letzte Änderung:07 Feb 2013 20:48

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