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Theory of Radar Polarimetric Interferometry and Its Application to the Retrieval of Sea Ice Elevation in the Western Weddell Sea, Antarctic

Nghiem, Son and Huang, Lanqing and Hajnsek, Irena (2022) Theory of Radar Polarimetric Interferometry and Its Application to the Retrieval of Sea Ice Elevation in the Western Weddell Sea, Antarctic. Earth and Space Science, 9 (5), pp. 1-19. American Geophysical Union (AGU). doi: 10.1029/2021EA002191. ISSN 2333-5084.

Full text not available from this repository.

Official URL: https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2021EA002191

Abstract

Sea ice elevation plays a crucial role in sea ice dynamic processes driven by winds and waves, for which satellite radar remote sensing becomes indispensable to monitor snow-covered sea ice across the vast polar regions regardless of darkness and clouds. To measure sea ice elevation, a theory of polarimetric interferometry for both monostatic and bistatic radars is developed based on analytic solutions of Maxwell's equations, accounting for realistic and complicated properties of snow, sea ice, and seawater. This analytic method inherently preserves phase information that is imperative for radar polarimetry and interferometry. Among a multitude of complex radar coefficients in the general polarimetric interferometric covariance matrix, the symmetry group theory is utilized to identify and select appropriate terms pertaining to the retrieval of sea ice elevation while avoiding radar parameters that may inadvertently introduce non-uniqueness and excessive uncertainty. Theoretical calculations compare well with field observations for rough and old sea ice encountered in the Operation-IceBridge and TanDEM-X Antarctic Science Campaign over the Western Weddell Sea. The results show that the magnitude of the coefficient of normalized correlation between co-polarized horizontal and co-polarized vertical radar returns is inversely related to sea ice elevation, while the associate phase term is nonlinear and noisy and should be excluded. From these analyses, a protocol is set up to measure Antarctic sea ice elevation to be presented in the next companion paper

Item URL in elib:https://elib.dlr.de/186306/
Document Type:Article
Title:Theory of Radar Polarimetric Interferometry and Its Application to the Retrieval of Sea Ice Elevation in the Western Weddell Sea, Antarctic
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Nghiem, SonJet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USAUNSPECIFIEDUNSPECIFIED
Huang, LanqingETH ZurichUNSPECIFIEDUNSPECIFIED
Hajnsek, IrenaDLR-HR/ETH ZurichUNSPECIFIEDUNSPECIFIED
Date:18 April 2022
Journal or Publication Title:Earth and Space Science
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:9
DOI:10.1029/2021EA002191
Page Range:pp. 1-19
Publisher:American Geophysical Union (AGU)
Series Name:Earth and Space Science
ISSN:2333-5084
Status:Published
Keywords:sea ice elevation, satellite radar remote sensing, snow-covered sea ice, polarimetric interferometry
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 - Evolution data management systems of earth observation
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > Radar Concepts
Deposited By: Radzuweit, Sibylle
Deposited On:03 May 2022 15:20
Last Modified:29 Jun 2023 07:24

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