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Potential of Geodetic SAR for Positioning and Height Monitoring with TerraSAR-X and Sentinel-1

Gisinger, Christoph and Eineder, Michael and Gruber, Thomas and Balss, Ulrich (2016) Potential of Geodetic SAR for Positioning and Height Monitoring with TerraSAR-X and Sentinel-1. ESA Special Publication Proceedings. Living Planet Symposium 2016, 2016-05-09 - 2016-05-13, Prag, Tschechien. ISBN 978-92-9221-305-3. ISSN 1609-042X.

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Official URL: http://www.spacebooks-online.com/product_info.php?cPath=104&products_id=17659&osCsid=0e4991fba1e168d3289dc7c618c49b0c


Our research in exploiting the inherent ranging capabilities of Synthetic Aperture Radar (SAR) has demonstrated range observations at the one centimeter accuracy level for passive radar reflectors, given that the radar observations are processed by a geometrically accurate SAR processor. Moreover, external disturbances caused by atmospheric path delay (troposphere, ionosphere) and geodynamic displacements (solid earth tides, ocean loading, ...) have to be taken into account. The correction approach follows the concept used in well established geodetic techniques like Global Navigation Satellite System (GNSS) or radar altimetry. By making use of these geodetic SAR observations, direct 3D positioning of specifically designed passive objects (corner reflectors, octahedrons) or active transponders becomes attainable. For TerraSAR-X, the 3D positioning capability has been tested with different passive reflectors and enables an accuracy at the centimeter level. Regarding Sentinel-1, the ranging results reported for the geometrical calibration campaign show encouraging results of approximately 6 cm, and further refinements are currently under investigation. In addition, the feasibility of active transponders as radar targets was successfully demonstrated, making Sentinel-1 another candidate for geodetic SAR applications. The presentation discusses the 3D SAR method in the context of applications, which require an accurate monitoring of the ellipsoidal heights in order to link them to the global geometric reference frame. We give an overview on our SAR methods and state the potential for positioning and height monitoring with TerraSAR-X and Sentinel-1 on the base of selected study regions.

Item URL in elib:https://elib.dlr.de/103993/
Document Type:Conference or Workshop Item (Speech)
Title:Potential of Geodetic SAR for Positioning and Height Monitoring with TerraSAR-X and Sentinel-1
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Eineder, MichaelUNSPECIFIEDhttps://orcid.org/0000-0001-5068-1324UNSPECIFIED
Balss, UlrichUNSPECIFIEDhttps://orcid.org/0009-0004-2996-6842UNSPECIFIED
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
EditorsEmailEditor's ORCID iDORCID Put Code
Publisher:ESA Special Publication Proceedings
Keywords:SAR absolute ranging, Height determination, radar reflectors, 3D positioning
Event Title:Living Planet Symposium 2016
Event Location:Prag, Tschechien
Event Type:international Conference
Event Start Date:9 May 2016
Event End Date:13 May 2016
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:20 Apr 2016 13:47
Last Modified:24 Apr 2024 20:09

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