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Interferometric Processing of Sentinel-1 TOPS Data

Yague-Martinez, Nestor and Prats-Iraola, Pau and Rodriguez Gonzalez, Fernando and Brcic, Ramon and Shau, Robert and Geudtner, Dirk and Eineder, Michael and Bamler, Richard (2016) Interferometric Processing of Sentinel-1 TOPS Data. IEEE Transactions on Geoscience and Remote Sensing, 54 (04), pp. 2220-2234. IEEE - Institute of Electrical and Electronics Engineers. DOI: 10.1109/TGRS.2015.2497902 ISSN 0196-2892

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Official URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=7390052

Abstract

Sentinel-1 (S-1) has an unparalleled mapping capacity. In Interferometric Wide Swath (IW) mode, three subswaths imaged in the novel Terrain Observation by Progressive Scans (TOPS) SAR mode result in a total swath width of 250 km. Sentinel-1 has become the European workhorse for large area mapping and interferometric monitoring at medium resolution. The interferometric processing of TOPS data requires however special consideration of the signal properties, resulting from the ScanSAR-type burst imaging and the antenna beam steering in azimuth. The high Doppler rate in azimuth sets very stringent coregistration requirements, making the use of Enhanced Spectral Diversity (ESD) necessary to obtain the required fine azimuth coregistration accuracy. Other unique aspects of processing IW data, such as azimuth spectral filtering, image resampling and data deramping and reramping, are reviewed giving a recipe-like description that enables the user community to use Sentinel-1 IW mode repeat-pass SAR data. Interferometric results from Sentinel-1A are provided, demonstrating the mapping capacity of the S-1 system and its interferometric suitability for geophysical applications. An interferometric evaluation of a coherent interferometric pair over Salar de Uyuni, Bolivia is provided, where several aspects related to coregistration, deramping and synchronization are analysed. Additionally, a spatial and temporal evaluation of the along-track shifts, which are directly related to the orbital/instrument timing error, measured from the SAR data is shown that justifies the necessity to refine the azimuth shifts with ESD. The spatial evaluation indicates high stability of the azimuth shifts for several slices of a datatake.

Item URL in elib:https://elib.dlr.de/100050/
Document Type:Article
Title:Interferometric Processing of Sentinel-1 TOPS Data
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Yague-Martinez, NestorNestor.Yague (at) dlr.deUNSPECIFIED
Prats-Iraola, PauPau.Prats (at) dlr.deUNSPECIFIED
Rodriguez Gonzalez, Fernandofernando.rodriguezgonzalez (at) dlr.deUNSPECIFIED
Brcic, Ramonramon.brcic (at) dlr.deUNSPECIFIED
Shau, Robertrobert.shau (at) dlr.deUNSPECIFIED
Geudtner, DirkESA-ESTECUNSPECIFIED
Eineder, Michaelmichael.eineder (at) dlr.deUNSPECIFIED
Bamler, RichardRichard.Bamler (at) dlr.deUNSPECIFIED
Date:4 April 2016
Journal or Publication Title:IEEE Transactions on Geoscience and Remote Sensing
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:54
DOI :10.1109/TGRS.2015.2497902
Page Range:pp. 2220-2234
Editors:
EditorsEmail
Plaza, Antonioaplaza@unex.es
Publisher:IEEE - Institute of Electrical and Electronics Engineers
ISSN:0196-2892
Status:Published
Keywords:Sentinel-1, TOPS, InSAR, Synthetic Aperture Radar, Coregistration
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 - Projekt TanDEM-X
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > SAR Signal Processing
Microwaves and Radar Institute > SAR Technology
Deposited By: Yague-Martinez, Nestor
Deposited On:27 Nov 2015 09:27
Last Modified:31 Jul 2019 19:56

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