Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Steffen Wollstadt"'
Autor:
Gabriel Castellanos Alfonzo, Marco Schwerdt, Steffen Wollstadt, Markus Bachmann, Björn Döring, Dirk Geudtner
Publikováno v:
International Journal of Antennas and Propagation, Vol 2013 (2013)
The antenna model used for correcting the influence of the antenna pattern on synthetic aperture radar (SAR) images requires on-ground validation and in-flight verification. A methodology for the in-flight verification that is based upon the measurem
Externí odkaz:
https://doaj.org/article/e197c7e599e642d6a06440667f64820e
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing. 9:1015-1027
For the TerraSAR-X mission a new staring spotlight mode has been implemented delivering very high azimuth resolution. Detailed performance analyses have been conducted in order to optimize the commanding parameters for this mode. Compared to the prev
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::357cf01b1be1cb276fc43e318c6ab2ec
https://doi.org/10.1109/jstars.2015.2431821
https://doi.org/10.1109/jstars.2015.2431821
Autor:
Marc Rodriguez-Cassola, Maria J. Sanjuan-Ferrer, Steffen Wollstadt, Pau Prats-Iraola, Nestor Yague-Martinez
Publikováno v:
IGARSS
In this contribution, we propose the use of 2-looks Synthetic Aperture Radar data to retrieve azimuth velocities of moving targets with a single platform. The established technique to retrieve velocities of moving targets is Along-track Inter-feromet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::373c17f0bd75a4eae9790aed9ecdaf88
https://elib.dlr.de/119378/
https://elib.dlr.de/119378/
Publikováno v:
IGARSS
The Terrain Observation by Progressive Scans (TOPS) SAR acquisition mode achieves wide coverage area by employing subapertures. This way multiple subswaths can be acquired. It overcomes the problems of scalloping and azimuth-varying ambiguities inher
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d824704de838085962a4ee60d1d86637
https://elib.dlr.de/119891/
https://elib.dlr.de/119891/
This paper presents a methodology to design a spaceborne dual-beam along-track synthetic aperture radar interferometer to retrieve ocean surface velocity vectors. All related aspects and necessary tradeoffs are identified and discussed or reviewed, r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::98b0ae57ba374478ff6facfd33d486d4
https://doi.org/10.1109/tgrs.2017.2692880
https://doi.org/10.1109/tgrs.2017.2692880
Autor:
Rolf Scheiber, Marco Schwerdt, Marc Rodriguez-Cassola, Francesco De Zan, Alberto Moreira, Benjamin Bräutigam, Pau Prats-Iraola, Steffen Wollstadt, Andreas Reigber, Josef Mittermayer
Publikováno v:
IEEE Transactions on Geoscience and Remote Sensing. 52:6003-6016
This paper addresses several important aspects that need to be considered for the processing of spaceborne synthetic aperture radar (SAR) data with resolutions in the decimeter range. In particular, it will be shown how the motion of the satellite du
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::79f4ca0ecccd102b459d6c2ffbfe92c0
https://doi.org/10.1109/tgrs.2013.2294353
https://doi.org/10.1109/tgrs.2013.2294353
Autor:
Gerhard Krieger, Steffen Wollstadt, Pau Prats-Iraola, Paco Lopez-Dekker, Alberto Moreira, Josef Mittermayer
Publikováno v:
IEEE Transactions on Geoscience and Remote Sensing. 51:601-614
This paper introduces the bidirectional synthetic aperture radar (BiDi SAR) imaging mode, i.e., the simultaneous imaging of two directions by one antenna into one receiving channel, and presents short-term time series of images and interferograms acq
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0d8d6e1ec5e889ed36d93cac608608cd
https://doi.org/10.1109/tgrs.2012.2202669
https://doi.org/10.1109/tgrs.2012.2202669
Publikováno v:
IGARSS
This contribution presents a set of experiments performed with the TerraSAR-X (TSX) and TanDEM-X (TDX) satellites, whose aim is to estimate the scene motion in the along-track direction in repeat-pass scenarios with an accuracy better than the one gi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ef92834fda38b86d148152185055412e
https://doi.org/10.1109/igarss.2016.7729369
https://doi.org/10.1109/igarss.2016.7729369
Publikováno v:
IEEE Transactions on Geoscience and Remote Sensing. 50:3179-3188
This paper presents results on SAR interferometry for data acquired in the Terrain Observation by Progressive Scans (TOPS) imaging mode. The rationale to retrieve accurate interferometric products in this mode is expounded, emphasizing the critical s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::51e34cf20f340c6d6e8e6559d12c1971
https://doi.org/10.1109/tgrs.2011.2178247
https://doi.org/10.1109/tgrs.2011.2178247
Publikováno v:
IEEE Geoscience and Remote Sensing Letters. 9:614-618
This letter presents an investigation on scalloping correction in the Terrain Observation by Progressive Scan (TOPS) imaging mode for synthetic aperture radar systems with electronically steered phased array antennas. A theoretical simulation of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::44d81509462e834a9b6348d177f96786
https://doi.org/10.1109/lgrs.2011.2176716
https://doi.org/10.1109/lgrs.2011.2176716