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Geocoding Error Correction for InSAR Point Clouds

Montazeri, Sina and Rodriguez Gonzalez, Fernando and Zhu, Xiao Xiang (2018) Geocoding Error Correction for InSAR Point Clouds. Remote Sensing, 10 (10), pp. 1-22. Multidisciplinary Digital Publishing Institute (MDPI). DOI: 10.3390/rs10101523 ISSN 2072-4292

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Official URL: https://www.mdpi.com/2072-4292/10/10/1523


Persistent Scatterer Interferometry (PSI) is an advanced multitemporal InSAR technique that is capable of retrieving the 3D coordinates and the underlying deformation of time-coherent scatterers. Various factors degrade the localization accuracy of PSI point clouds in the geocoding process, which causes problems for interpretation of deformation results and also making it difficult for the point clouds to be compared with or integrated into data from other sensors. In this study, we employ the SAR imaging geodesy method to perform geodetic corrections on SAR timing observations and thus improve the positioning accuracy in the horizontal components. We further utilize geodetic stereo SAR to extract large number of highly precise ground control points (GCP) from SAR images, in order to compensate for the unknown height offset of the PSI point cloud. We demonstrate the applicability of the approach using TerraSAR-X high resolution spotlight images over the city of Berlin, Germany. The corrected results are compared with a reference LiDAR point cloud of Berlin, which confirms the improvement in the geocoding accuracy.

Item URL in elib:https://elib.dlr.de/121841/
Document Type:Article
Title:Geocoding Error Correction for InSAR Point Clouds
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Montazeri, SinaSina.Montazeri (at) dlr.dehttps://orcid.org/0000-0002-6732-1381
Rodriguez Gonzalez, Fernandofernando.rodriguezgonzalez (at) dlr.deUNSPECIFIED
Zhu, Xiao Xiangxiaoxiang.zhu (at) dlr.dehttps://orcid.org/0000-0001-5530-3613
Date:22 September 2018
Journal or Publication Title:Remote Sensing
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
DOI :10.3390/rs10101523
Page Range:pp. 1-22
Motagh, MahdiMotagh@gfz-potsdam.de
Bamler, RichardRichard.Bamler@dlr.de
Li, ZhenhongZhenhong.Li@newcastle.ac.uk
Hanssen, Ramon F.R.F.Hanssen@tudelft.nl
Publisher:Multidisciplinary Digital Publishing Institute (MDPI)
Series Name:Remote Sensing Image Processing - Special Issue "Imaging Geodesy and Infrastructure Monitroing"
Keywords:geocoding, geodetic correction, ground control point, persistent scatterer interferometry, positioning, synthetic aperture Radar, TerraSAR-X
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 hochauflösende Fernerkundungsverfahren
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > EO Data Science
Deposited By: Montazeri, Sina
Deposited On:26 Sep 2018 11:56
Last Modified:14 Dec 2019 04:26

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