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Tropospheric and Ionospheric Effects in Spaceborne Single-Pass SAR Interferometry and Radargrammetry

Krieger, Gerhard and De Zan, Francesco and Bachmann, Markus and Lopez-Dekker, Paco and Rodriguez-Cassola, Marc and Kim, Jun Su (2014) Tropospheric and Ionospheric Effects in Spaceborne Single-Pass SAR Interferometry and Radargrammetry. In: Proceedings of the European Conference on Synthetic Aperture Radar (EUSAR), pp. 1097-1100. VDE Verlag GmbH. European Conference on Synthetic Aperture Radar (EUSAR), 06-03-2014 - 06-05-2014, Berlin. ISBN 978-3-8007-3608-9 ISSN 2197-4403

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Official URL: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6856991&refinements%3D4275131631%26sortType%3Dasc_p_Sequence%26filter%3DAND%28p_IS_Number%3A6856712%29

Abstract

It has often been claimed that spaceborne single-pass cross-track SAR interferometry is - up to an overall range shift - not affected by atmospheric effects. A closer analysis reveals, however, that both the troposphere and the ionosphere may cause notable phase, range and height offsets even in a single-pass interferometer. One such offset is due to slightly different incident angles which cause different path lengths through both the troposphere and the ionosphere. Another subtle effect arises from the wavenumber shift in combination with a dispersive medium like the ionosphere, which may induce differential range offsets in coherent radargrammetry. The analyses in this paper are not only of importance for future low-frequency bistatic SAR missions like Tandem-L, but they may also shed some new light on how the ionosphere can influence repeat-pass interferometry and radargrammetry in case of non-vanishing cross-track baselines.

Item URL in elib:https://elib.dlr.de/91631/
Document Type:Conference or Workshop Item (Speech)
Title:Tropospheric and Ionospheric Effects in Spaceborne Single-Pass SAR Interferometry and Radargrammetry
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Krieger, GerhardUNSPECIFIEDUNSPECIFIED
De Zan, FrancescoUNSPECIFIEDUNSPECIFIED
Bachmann, MarkusUNSPECIFIEDUNSPECIFIED
Lopez-Dekker, PacoUNSPECIFIEDUNSPECIFIED
Rodriguez-Cassola, MarcUNSPECIFIEDUNSPECIFIED
Kim, Jun SuUNSPECIFIEDUNSPECIFIED
Date:3 June 2014
Journal or Publication Title:Proceedings of the European Conference on Synthetic Aperture Radar (EUSAR)
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 1097-1100
Publisher:VDE Verlag GmbH
ISSN:2197-4403
ISBN:978-3-8007-3608-9
Status:Published
Keywords:ionosphere, troposphere, SAR, interferometry, spectral shift, TanDEM-X, Tandem-L
Event Title:European Conference on Synthetic Aperture Radar (EUSAR)
Event Location:Berlin
Event Type:international Conference
Event Dates:06-03-2014 - 06-05-2014
Organizer:VDE
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 Entwicklung eines Mini-SAR, R - Vorhaben Tandem-L Vorstudien, R - Projekt TanDEM-X, R - Vorhaben Technologie Experimente TSX und TDX
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > Radar Concepts
Microwaves and Radar Institute > SAR Technology
Microwaves and Radar Institute > Spaceborne SAR Systems
Deposited By: Krieger, Dr.-Ing. Gerhard
Deposited On:07 Nov 2014 10:42
Last Modified:31 Jul 2019 19:48

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