Rodriguez Cassola, Marc und Prats-Iraola, Pau und De Zan, Francesco und Scheiber, Rolf und Reigber, Andreas und Geudtner, Dirk und Moreira, Alberto (2015) Doppler-related Distortions in TOPS SAR Images. IEEE Transactions on Geoscience and Remote Sensing, 53 (1), Seiten 25-35. IEEE - Institute of Electrical and Electronics Engineers. doi: 10.1109/TGRS.2014.2313068. ISSN 0196-2892.
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Kurzfassung
A direct consequence of the TOPS acquisition geometry and the steering in azimuth of the antenna is the timevarying Doppler centroid within bursts. If this fact is not properly accommodated during SAR image formation, undesired distortions in both azimuth and range dimensions of the focused SAR images may appear. Azimuth distortions are caused by the local mismatch of both squint and topography. Range distortions arise from the inaccurate accommodation of the intrapulse motion of the platform, usually known as the stop-and-go approximation. Conventional spaceborne SAR image formation schemes will be, in general, unable to provide accurate TOPS SAR images. These distortions are discussed and evaluated for exemplary low-Earthorbit SAR scenarios. Compensation strategies are presented and validated with TerraSAR-X TOPS data. A discussion of the potential impact on the Sentinel-1 interferometric-wide-swath and extra-wide-swath modes (i.e., TOPS) is also given.
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Titel: | Doppler-related Distortions in TOPS SAR Images | ||||||||||||||||||||||||||||||||
Autoren: |
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Datum: | Januar 2015 | ||||||||||||||||||||||||||||||||
Erschienen in: | IEEE Transactions on Geoscience and Remote Sensing | ||||||||||||||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||||||||||||||
Open Access: | Ja | ||||||||||||||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||||||||||||||
In SCOPUS: | Ja | ||||||||||||||||||||||||||||||||
In ISI Web of Science: | Ja | ||||||||||||||||||||||||||||||||
Band: | 53 | ||||||||||||||||||||||||||||||||
DOI: | 10.1109/TGRS.2014.2313068 | ||||||||||||||||||||||||||||||||
Seitenbereich: | Seiten 25-35 | ||||||||||||||||||||||||||||||||
Verlag: | IEEE - Institute of Electrical and Electronics Engineers | ||||||||||||||||||||||||||||||||
ISSN: | 0196-2892 | ||||||||||||||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||||||||||||||
Stichwörter: | Burst-mode acquisitions, Sentinel-1, spaceborne SAR missions, synthetic aperture radar (SAR), Terrain Observation with Progressive Scans (TOPS), TerraSAR-X (TerraSAR-X), wide-swath SAR modes. | ||||||||||||||||||||||||||||||||
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 | ||||||||||||||||||||||||||||||||
Hinterlegt von: | Rodriguez Cassola, Marc | ||||||||||||||||||||||||||||||||
Hinterlegt am: | 08 Dez 2014 08:42 | ||||||||||||||||||||||||||||||||
Letzte Änderung: | 28 Nov 2023 09:07 |
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