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Speckle Tracking and Interferometric Processing of TerraSAR-X TOPS Data for Mapping Nonstationary Scenarios

Scheiber, Rolf and Jäger, Marc and Prats, Pau and De Zan, Francesco and Geudtner, Dirk (2015) Speckle Tracking and Interferometric Processing of TerraSAR-X TOPS Data for Mapping Nonstationary Scenarios. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 8 (4), pp. 1709-1720. IEEE - Institute of Electrical and Electronics Engineers. DOI: 10.1109/JSTARS.2014.2360237 ISSN 1939-1404

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Official URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=6926747

Abstract

Terrain observation by progressive scan (TOPS) antenna beam steering is utilized for European Space Agency’s (ESA’s) Sentinel-1 synthetic aperture radar (SAR) sensor for the interferometric wide swath (IW) and extra wide swath (EW) modes. As a consequence of the azimuth steering, the resulting signal characteristics have to be accounted for in SAR interferometric (InSAR) processing. This paper assesses the performance of speckle tracking and spectral diversity (SD) [also referred to as split spectrum or multi-aperture interferometry (MAI)] when applied to TOPS data acquired over nonstationary scenarios, such as glaciers. The characteristics of the TOPS signal, especially the azimuth-variant Doppler centroid, are discussed with particular consideration of along-track surface motion between the interferometric acquisitions. The TOPS specific coregistration requirements are formulated, followed by an analysis of the theoretical estimation accuracy as a function of the estimation window size. A refined adaptive coregistration approach based on D is suggested. Experimental TerraSAR-X TOPS data acquired over the Lambert glacier, Antarctica, are used to validate the proposed speckle tracking and SD methodologies.

Item URL in elib:https://elib.dlr.de/97025/
Document Type:Article
Additional Information:©2014 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:Speckle Tracking and Interferometric Processing of TerraSAR-X TOPS Data for Mapping Nonstationary Scenarios
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Scheiber, RolfUNSPECIFIEDUNSPECIFIED
Jäger, MarcUNSPECIFIEDUNSPECIFIED
Prats, PauUNSPECIFIEDUNSPECIFIED
De Zan, FrancescoUNSPECIFIEDUNSPECIFIED
Geudtner, DirkUNSPECIFIEDUNSPECIFIED
Date:April 2015
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:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:8
DOI :10.1109/JSTARS.2014.2360237
Page Range:pp. 1709-1720
Editors:
EditorsEmail
UNSPECIFIEDIEEE
Publisher:IEEE - Institute of Electrical and Electronics Engineers
ISSN:1939-1404
Status:Published
Keywords:burst-mode acquisitions, coregistration, Sentinel-1, synthetic aperture radar (SAR), terrain observation by progressive scan (TOPS), TerraSAR-X, wide-swath SAR modes
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben Flugzeug-SAR
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute
Microwaves and Radar Institute > SAR Technology
Microwaves and Radar Institute > Radar Concepts
Deposited By: Scheiber, Dr.-Ing. Rolf
Deposited On:07 Jul 2015 12:01
Last Modified:31 Jul 2019 19:53

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