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Trajectory uncertainty in repeat-pass SAR interferometry: a case study

Coscione, Roberto and Hajnsek, Irena and Frey, Othmar (2019) Trajectory uncertainty in repeat-pass SAR interferometry: a case study. In: IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium. IEEE. IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2019-07-28 - 2019-08-02, Yokohama, Japan. doi: 10.1109/IGARSS.2019.8898809.

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Official URL: https://ieeexplore.ieee.org/document/8898809


In the context of differential synthetic aperture radar interferometry (DInSAR), precise trajectory estimation of the SAR platform is necessary to minimize residual phase errors induced by inaccurate knowledge of the 3D acquisition geometry. Inertial navigation systems (INS) and global navigation satellite system (GNSS) are usually employed to track the position of the platform. However, their unavoidable inaccuracies lead to motion estimation errors that negatively affect the quality of the processed radar data. To assess the positioning performance in a repeat-pass scenario, we used a navigation-grade INS/GNSS system to precisely track the position and the attitude of a platform moving along a rail and carrying a SAR sensor. We analyse the performance of the positioning solution for different scenarios relevant to repeat-pass DInSAR. Since the position of the platform is nearly perfectly repeated at every pass (zero interferometric baseline), the precision of the estimated position can be assessed and the interferometric performance evaluated.

Item URL in elib:https://elib.dlr.de/139506/
Document Type:Conference or Workshop Item (Speech)
Title:Trajectory uncertainty in repeat-pass SAR interferometry: a case study
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Coscione, RobertoETH ZürichUNSPECIFIED
Journal or Publication Title:IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
DOI :10.1109/IGARSS.2019.8898809
Series Name:Remote Sensing
Keywords:Radar, interferometry, DInSAR, terrestrial SAR, inertial navigation system (INS), global navigation satellite system (GNSS), real time kinematic (RTK), post-processed kinematic (PPK)
Event Title:IEEE International Geoscience and Remote Sensing Symposium (IGARSS)
Event Location:Yokohama, Japan
Event Type:international Conference
Event Dates:2019-07-28 - 2019-08-02
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:16 Dec 2020 09:57
Last Modified:16 Dec 2020 09:57

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