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Polarimetric Behaviour for the Derivation of Sea Ice Topographic Height from TanDEM-X Interferometric SAR Data

Lanqing, Huang and Hajnsek, Irena (2020) Polarimetric Behaviour for the Derivation of Sea Ice Topographic Height from TanDEM-X Interferometric SAR Data. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, p. 1. IEEE - Institute of Electrical and Electronics Engineers. doi: 10.1109/JSTARS.2020.3036395. ISBN Print ISSN: 1939-1404 Electronic ISSN: 2151-1535. ISSN 1939-1404.

Full text not available from this repository.

Official URL: https://ieeexplore.ieee.org/document/9250474

Abstract

Single-pass interferometric synthetic aperture radar (InSAR) is an effective technique for sea ice topographic retrieval despite the inherent dynamics of sea ice. However, the penetration of microwaves into snow-covered thick ice and the achievable height sensitivity for tens-of-centimeters thin ice are two major issues which limit the accuracy of InSAR-derived sea ice topography. Polarimetry provides scattering information concerning the sea ice properties and has the potential, in combination with interferometry, to achieve an accurate reconstruction of a sea ice digital elevation model (DEM). This paper studies the relation between polarimetric signatures and sea ice topography, and explores the possibility to compensate the penetration bias by merging co-polar coherence into InSAR processing. The newly generated topographic map has a root-mean-square error under 0.3 m. For thin ice below 1 m, a positive relation between co-polar phase coPol and surface height is observed, suggesting that coPol can effectively characterize thin sea ice topography. For thick ice with ridges, the maximum polarimetric phase difference maxPol reveals a particular shape of the coherence region, which can be interpreted as oriented volume scattering. It suggests that the model-based approach using polarimetric SAR interferometry assuming an oriented volume scattering model is promising in measuring the scattering centers in thick and deformed sea ice. The study of polarimetric behaviour for the InSAR DEM is therefore a step forward toward accurate modelling of sea ice topography from polarimetric single-pass InSAR data.

Item URL in elib:https://elib.dlr.de/139418/
Document Type:Article
Title:Polarimetric Behaviour for the Derivation of Sea Ice Topographic Height from TanDEM-X Interferometric SAR Data
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Lanqing, HuangETH ZürichUNSPECIFIED
Hajnsek, IrenaUNSPECIFIEDUNSPECIFIED
Date:6 November 2020
Journal or Publication Title:IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :10.1109/JSTARS.2020.3036395
Page Range:p. 1
Publisher:IEEE - Institute of Electrical and Electronics Engineers
Series Name:IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing ( Early Access )
ISSN:1939-1404
ISBN:Print ISSN: 1939-1404 Electronic ISSN: 2151-1535
Status:Published
Keywords:Sea ice, Ice, Surfaces, Snow, Sea measurements, Synthetic aperture radar, Surface topography, Polarimetry, single-pass interferometry, sea ice topography, TanDEM-X
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Security-relevant Earth Observation
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > Radar Concepts
Deposited By: Radzuweit, Sibylle
Deposited On:14 Dec 2020 10:05
Last Modified:21 Dec 2020 08:42

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