Prats-Iraola, Pau und Lopez-Dekker, Paco und De Zan, Francesco und Yague-Martinez, Nestor und Zonno, Mariantonietta und Rodriguez-Cassola, Marc (2018) Performance of 3-D Surface Deformation Estimation for Simultaneous Squinted SAR Acquisitions. IEEE Transactions on Geoscience and Remote Sensing, 56 (4), Seiten 2147-2158. IEEE - Institute of Electrical and Electronics Engineers. doi: 10.1109/TGRS.2017.2776140. ISSN 0196-2892.
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Kurzfassung
This paper addresses the performance in the retrieval of 3-D mean deformation maps by exploiting simultaneous or quasi-simultaneous squinted synthetic aperture radar (SAR) interferometric acquisitions in a repeat-pass scenario. In multi-satellite or multi-beam low Earth observation (LEO) missions the availability of two (or more) lines of sight allows the simultaneous acquisition of SAR images with different squint angles, hence improving the sensitivity to the north-south component of the deformation. Due to the simultaneity of the acquisitions, the troposphere will be highly correlated and, therefore, will tend to cancel out when performing the differential measurement between the interferograms obtained with the different lines of sight, hence resulting in a practically troposphere-free estimation of the along-track deformation measurement. In practice, though, the atmospheric noise in the differential measurement will increase for increasing angular separations. The present contribution expounds the mathematical framework to derive the performance by properly considering the correlation of the atmospheric delays between the simultaneous acquisitions. To that aim, the hybrid Cramér-Rao bound is exploited making use of the autocorrelation function of the troposphere. Some performance examples are presented in the frame of future spaceborne SAR missions at C- and L-band.
elib-URL des Eintrags: | https://elib.dlr.de/116105/ | ||||||||||||||||||||||||||||
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Dokumentart: | Zeitschriftenbeitrag | ||||||||||||||||||||||||||||
Zusätzliche Informationen: | ©2018 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE | ||||||||||||||||||||||||||||
Titel: | Performance of 3-D Surface Deformation Estimation for Simultaneous Squinted SAR Acquisitions | ||||||||||||||||||||||||||||
Autoren: |
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Datum: | April 2018 | ||||||||||||||||||||||||||||
Erschienen in: | IEEE Transactions on Geoscience and Remote Sensing | ||||||||||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||||||||||
Open Access: | Nein | ||||||||||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||||||||||
In SCOPUS: | Ja | ||||||||||||||||||||||||||||
In ISI Web of Science: | Ja | ||||||||||||||||||||||||||||
Band: | 56 | ||||||||||||||||||||||||||||
DOI: | 10.1109/TGRS.2017.2776140 | ||||||||||||||||||||||||||||
Seitenbereich: | Seiten 2147-2158 | ||||||||||||||||||||||||||||
Verlag: | IEEE - Institute of Electrical and Electronics Engineers | ||||||||||||||||||||||||||||
ISSN: | 0196-2892 | ||||||||||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||||||||||
Stichwörter: | Synthetic aperture radar (SAR), differential SAR interferometry (DInSAR), hybrid Cramér-Rao bound, squinted SAR acquisitions, troposphere, atmospheric boundary layer | ||||||||||||||||||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||||||||||||||
HGF - Programm: | Raumfahrt | ||||||||||||||||||||||||||||
HGF - Programmthema: | Erdbeobachtung | ||||||||||||||||||||||||||||
DLR - Schwerpunkt: | Raumfahrt | ||||||||||||||||||||||||||||
DLR - Forschungsgebiet: | R EO - Erdbeobachtung | ||||||||||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | R - Flugzeug-SAR | ||||||||||||||||||||||||||||
Standort: | Oberpfaffenhofen | ||||||||||||||||||||||||||||
Institute & Einrichtungen: | Institut für Hochfrequenztechnik und Radarsysteme > SAR-Technologie Institut für Hochfrequenztechnik und Radarsysteme > Radarkonzepte Institut für Methodik der Fernerkundung > SAR-Signalverarbeitung | ||||||||||||||||||||||||||||
Hinterlegt von: | Prats, Dr. Pau | ||||||||||||||||||||||||||||
Hinterlegt am: | 29 Nov 2017 09:30 | ||||||||||||||||||||||||||||
Letzte Änderung: | 08 Nov 2023 14:36 |
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