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SAR Imaging Geodesy-Recent Results for TerraSAR-X and for Sentinel-1

Eineder, Michael and Gisinger, Christoph and Balss, Ulrich and Cong, Xiao Ying and Montazeri, Sina and Hackel, Stefan and Rodriguez Gonzalez, Fernando and Runge, Hartmut (2017) SAR Imaging Geodesy-Recent Results for TerraSAR-X and for Sentinel-1. FRINGE 2017, 5.-9. Jun. 2017, Helsinki, Finnland.

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Abstract

The Imaging Geodesy or Geodetic SAR technology exploits precise instrument metrology, wave propagation correction and dynamic Earth corrections following geodetic standards, e.g. solid Earth tides, to achieve an absolute pixel positioning accuracy comparable with GNSS. The achievable accuracy is in the low centimeter range, depending on the SAR system resolution, its metrology products such as orbit position and timing, on the SAR processor accuracy and on the accuracy of atmospheric information describing the neutral and dispersive path delay contributions. In the past the authors have demonstrated absolute positioning of corner reflectors with 5 cm accuracy in 3D space [2] and the positioning of natural points with a about 10 cm accuracy [3,5]. They have furthermore developed a pre-operational processor to add geodetic information to TerraSAR-X products [3]. An extension to other sensors is foreseen, especially Sentinel-1. Moreover, a large corner reflector (CR) array with more than 40 CRs distributed across some 150 by 150 kilometers has become available [4]. It is maintained by Geoscience Australia (GSA) and offers many possibilities in testing and verifying the said methods. Current work is focused on using alternative reflectors than conventional corner reflectors, exploiting the lower resolution TOPS mode of Sentinel-1 and to seek for more applications of this new geodetic method [5], [6]. The talk summarizes recent developments, i.e. - highly accurate TerraSAR-X geodetic measurements - experiences with new, higher resolution ECMWF data to model the neutral atmosphere - experiences with Sentinel-1 data on the team’s and the GSA corner reflector networks and - a study plan to extend the technology to Sentinel-1 data

Item URL in elib:https://elib.dlr.de/109261/
Document Type:Conference or Workshop Item (Poster)
Title:SAR Imaging Geodesy-Recent Results for TerraSAR-X and for Sentinel-1
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Eineder, MichaelMichael.Eineder (at) dlr.deUNSPECIFIED
Gisinger, Christophtum-iapgUNSPECIFIED
Balss, UlrichUlrich.Balss (at) dlr.deUNSPECIFIED
Cong, Xiao YingTUM LMFUNSPECIFIED
Montazeri, SinaSina.Montazeri (at) dlr.deUNSPECIFIED
Hackel, StefanStefan.Hackel (at) dlr.deUNSPECIFIED
Rodriguez Gonzalez, FernandoFernando.RodriguezGonzalez (at) dlr.deUNSPECIFIED
Runge, HartmutHartmut.Runge (at) dlr.deUNSPECIFIED
Date:5 June 2017
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:SAR, Geodetic SAR, Imaging Geodesy, TerraSAR-X, Sentinel-1, geometric calibration
Event Title:FRINGE 2017
Event Location:Helsinki, Finnland
Event Type:international Conference
Event Dates:5.-9. Jun. 2017
Organizer:ESA
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 - Vorhaben hochauflösende Fernerkundungsverfahren (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > SAR Signal Processing
Deposited By: Eineder, Prof. Dr. Michael
Deposited On:08 Dec 2016 11:27
Last Modified:31 Jul 2019 20:06

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